When confronting the unexplained, it is helpful to consider it from many different points of view. In an essay published in 2004, entitled "Sensors, Filters, and the Source of Reality," Robert Jahn and Brenda Dunne of Princeton University's PEAR laboratory proposed that consciousness constructs its reality by ordering the information it derives from the external world through an array of physiological, psychological, and cultural filters. This thesis has now been considered by nineteen distinguished scholars who here present their commentaries from (...) a broad spectrum of professional and personal perspectives. Drawn from such diverse backgrounds as art, Buddhism, evolutionary biology, fantasy, out-of-body experiences, philosophy, physics, psychology, semiotics, and systems engineering, among others, these contributions offer an assortment of unique and fascinating glimpses of how our experiences and their styles of representation are reflected through these filters of consciousness. (shrink)

This book analyses various examples of the imaginative semiotisation of the Fall of Man and the Church's semiotic perception of the Divine plan for Redemption. Based on a close reading of primary sources, it analyses the meaning-making inherent in these ideas, which are filtered through and given material representation by the semiotic paradigms of various cultural fields, including philology, verbal arts and science.

Rationality and reasonableness can be illustrated as Janus-faced concepts, not only in a descriptive diagnosis but also in a normative construction of adjudication, and in the analysis of its practical and rhetorical effects. Considering such an illustration, the present reflection returns to the discussion on the relevance of rationality and reasonableness in legal interpretation, aiming at distinguishing and/or connecting principles and criteria, beyond formally logical and/or procedurally argumentative decision-making, and, thus, within a normatively practical adjudication. Such an approach will be (...) presented in two main steps. In a first step, the rationality/reasonableness dichotomy will be discussed within a constitutive connection between principles and criteria in adjudication, and understanding legal principles as normatively substantial foundations to legal criteria—the former as axiological references filtered into the juridical system and the latter as their concretizations, and whose practical adequacy is rhetorically assigned by the interpretive communities involved in/by adjudication, and normatively referred both to their practical accordance to the axiological normativity of the principles they shall presuppose and to their suitability as practical operators to the problematic relevance of the sub judice cases. In a second step, and consequently, encompassing the projection of legal interpretation, in semiotic and in practical-normative perspectives, in order to discuss their constituting practical relevance in adjudication, the rationality/reasonableness dichotomy will be experimented within formal-logical procedures and within practical-dialectical connections between juridical problem and juridical system—therefore stating a discussion on the foundations, the intentionality and the consequences of adjudication, amongst deduction and analogy. (shrink)

his is a book to broaden the mind. It brings the reader into a world only vaguely imaginable and richly enlightens it with extraordinary attention to interesting historical details. It is beautifully written and endlessly interesting.

Stemming from Uexkull’s fundamental concepts of Umwelt and Innenwelt as developed in the biosemiotic approach of Ferreira 2010, 2011, the present work models mathematically the semiosis of cognition and proposes an artificial cognitive architecture to be deployed in a robotic structure.

This article, first published in Russian in 1984 in Sign Systems Studies, introduces the concept of semiosphere and describes its principal attributes. Semiosphere is the semiotic space, outside of which semiosis cannot exist. The ensemble of semiotic formations functionally precedes the singular isolated language and becomes a condition for the existence of the latter. Without the semiosphere, language not only does not function, it does not exist. The division between the core and the periphery is a law of (...) the internal organisation of the semiosphere. There exists boundary between the semiosphere and the non- or extra-semiotic space that surrounds it. The semiotic border is represented by the sum of bilingual translatable “filters”, passing through which the text is translated into another language (or languages), situated outside the given semiosphere. The levels of the semiosphere comprise an inter-connected group of semiospheres, each of them being simultaneously both participant in the dialogue (as part of the semiosphere) and the space of dialogue (the semiosphere as a whole). (shrink)

Although the body has been the focus of much contemporary cultural theory, the models that are typically applied neglect the most salient characteristics of embodied existence—movement, affect, and sensation—in favor of concepts derived from linguistic theory. In _Parables for the Virtual_ Brian Massumi views the body and media such as television, film, and the Internet, as cultural formations that operate on multiple registers of sensation beyond the reach of the reading techniques founded on the standard rhetorical and semiotic models. (...) Renewing and assessing William James’s radical empiricism and Henri Bergson’s philosophy of perception through the filter of the post-war French philosophy of Deleuze, Guattari, and Foucault, Massumi links a cultural logic of variation to questions of movement, affect, and sensation. If such concepts are as fundamental as signs and significations, he argues, then a new set of theoretical issues appear, and with them potential new paths for the wedding of scientific and cultural theory. Replacing the traditional opposition of literal and figural with new distinctions between stasis and motion and between actual and virtual, _Parables for the Virtual _tackles related theoretical issues by applying them to cultural mediums as diverse as architecture, body art, the digital art of Stelarc, and Ronald Reagan’s acting career. The result is an intriguing combination of cultural theory, science, and philosophy that asserts itself in a crystalline and multi-faceted argument. _Parables for the Virtual_ will interest students and scholars of continental and Anglo-American philosophy, cultural studies, cognitive science, electronic art, digital culture, and chaos theory, as well as those concerned with the “science wars” and the relation between the humanities and the sciences in general. (shrink)

In "Worlding World Literatures and Coetzee's Disgrace" Miaomiao Wang explores the concept of world literature as world-making activity, which gains in elliptical refraction, translation, and mode of reading. With the example of J.M. Coetzee's Disgrace, Wang illustrates cultural variations between the original English text and the Chinese translation of Disgrace through cultural filtering and literary misreading. Further, Wang analyzes images of "otherness" in Coetzee's text with regard to East Asia, especially in China, through the assimilation of the cultural rules of (...) national literature and its literary discourse thus making it part of world literature. Wang argues that cultural variation and the images of otherness can be attributed global importance as an emerging world literary canon and its aesthetic ideology. (shrink)

The problematic issues connected to post-truth communication emerged in all their social relevance after the victory of Brexit and Donald Trump in 2016. Fake news, echo chambers, filter bubbles, and a crisis of experts are some of the phenomena of this epoch of digital revolution that everyone is forced to deal with on daily basis. Public media echoed the plea for a return to a connection between reality, truth, and communication that has been advocated for by philosophy and communication (...) studies since the beginning of the century. However, the strategy for effecting this return is not clear. The paper presents two of the most common strategies employed by practitioners of communication in the newsrooms: reliance on a new form of positivism and the necessity of inculcating critical media literacy into the general population. Concluding that both proposals are inadequate, the paper proposes a rich, relational realism stemming from Peirce’s semiotic and metaphysical studies. (shrink)

This account will demonstrate that the element of surprise is a fundamental device in establishing double consciousness regimes; it further shows how such dialogic paradigms foster abductive inferences by filtering out irrelevant percepts/antecedents. The account sets up Peirce’s Pheme to be the primary device which shocks interpreters’ sensibilities – starting them on a course to question conflicting principles between ego and non-ego. The natural disposition of surprise to instantaneously deliver insight into which antecedents are relevant to vital, anomalous consequences demonstrates (...) its indispensability in generating logical and semiotic advances. For Peirce, vividness, as an element of surprise in Secondness, is largely responsible for the nuts and bolts of how surprise facilitates logic; its means to activate searches for plausible antecedents makes vividness the prime candidate. The success of vividness at turning the mind of interpreters to new ways of explaining the consequence largely hinges upon the external properties of the unexpected consequence – not merely objects’ instantaneity, but their striking characteristics, as well. Even though vividness is external, it produces internal responses, in the form of a war against feelings. In this way, double consciousness paradigms are initiated, which, in turn, call for hypothesis generation. (shrink)

As we settle further into the era of digital media and globalized visual culture, it might be tempting to think that photography holds no more than historical interest. Yet it continues to feature in debates with considerable significance for the present.1 The terms by which it was negotiated in the twentieth century – the print, the negative and the mechanical-optical apparatus, the affective experience of a moment stilled, and any truth that its rendering promises – have been technically and culturally (...) displaced and expanded. New instabilities have become familiar and have distanced us from how photography was understood, even in the fairly recent past. The current historical conjuncture is marked by a widespread suspicion that existing theories – including those that turned, in the 1970s, to Marxism, feminist critique, semiotics or psychoanalysis so as to politicize and contest mainstream photographic culture – might no longer be adequate to photography’s contemporary situation. That photography still matters, however, can be evidenced, prosaically and contingently, by noting the increasing number of new scholarly journals and exhibitions devoted to its past, present and future in recent years.2 There is, in this – as Fred Ritchin is only the latest to note – a sense that the undoing of photography’s prior certainties constitutes an ending and an enlargement. The fate of photography provides an ‘expansive filter’ through which to chart the ‘chaos of possibilities that emerge and recede, back up and move forward, crisscrossing each other.’3 Expectations of the new and the old, the obsolete and as yet only anticipated, are thrown into temporal disarray as its openness to reformation gives the photographic past a futural slant. (shrink)

In "The Variation of Chinese Literature and the Formation of World Literature" Shunqing Cao and Lu Zhai discuss how Chinese works of literature entered other countries' literary circles through variation, and became an essential part of world literature. Both ancient Chinese literature and contemporary Chinese literature have undergone textual circulation, language translation and cultural filtering before becoming part of world literature, all of which are the reasons why literary variation occurs. According to Cao and Zhai, the occurrence of variation is (...) a key factor for Chinese literature to become world literature, and an important foundation for the formation of world literature. A country's literature absorbs the characteristics of other countries' literature through variation, thus adapting to the cultural background and reading habits of other countries' readers in terms of language and style, in order to enter the world literature market. Variation may lead to a certain loss of nationality in literary works, and result in significant differences from the original texts. However, the formation of world literature does not come at the cost of eliminating nationality; variation facilitates the formation of world literature. (shrink)

This original and interdisciplinary volume explores the contemporary semiotic dimensions of the face from both scientific and socio-cultural perspectives, putting forward several traditions, aspects, and signs of the human utopia of creating a hybrid face. The book semiotically delves into the multifaceted realm of the digital face, exploring its biological and social functions, the concept of masks, the impact of COVID-19, AI systems, digital portraiture, symbolic faces in films, viral communication, alien depictions, personhood in video games, online intimacy, and (...) digital memorials. The human face is increasingly living a life that is not only that of the biological body but also that of its digital avatar, spread through a myriad of new channels and transformable through filters, post-productions, digital cosmetics, all the way to the creation of deepfakes. The digital face expresses new and largely unknown meanings, which this book explores and analyzes through an interdisciplinary but systematic approach. The volume will interest researchers, scholars and advanced students who are interested in digital humanities, communication studies, semiotics, visual studies, visual anthropology, cultural studies, and, broadly speaking, in innovative approaches about the meaning of the face in present-day digital societies. (shrink)

Starting from the cyclic principle in the process of a society's development, invoking „the end of history" that Hegel mentions, adding the paradoxical principle of Huntington's civilizations, of a unity in diversity, through which we can have a clear and universal image of the conflicts, as actions generated by a cultural-religious interaction, and passing these through the filter of the noble origin of the Occidental civilization, we renew a typology of the inter-societies conflict and we keep the possibility of (...) finding some methods for settling them. (shrink)

Starting from the cyclic principle in the process of a society's development, invoking „the end of history" that Hegel mentions, adding the paradoxical principle of Huntington's civilizations, of a unity in diversity, through which we can have a clear and universal image of the conflicts, as actions generated by a cultural-religious interaction, and passing these through the filter of the noble origin of the Occidental civilization, we renew a typology of the inter-societies conflict and we keep the possibility of (...) finding some methods for settling them. (shrink)

In this paper we introduce the notion of filter on the neutrosophic crisp set, then we consider a generalization of the filter’s studies. Afterwards, we present the important neutrosophic crisp filters. We also study several relations between different neutrosophic crisp filters and neutrosophic topologies. Possible applications to database systems are touched upon.

It is often suggested that we are equipped with a set of cognitive tools that help us to filter out unreliable testimony. But are these tools effective? I answer this question in two steps. Firstly, I argue that they are not real-time effective. The process of filtering, which takes place simultaneously with or right after language comprehension, does not prevent a particular hearer on a particular occasion from forming beliefs based on false testimony. Secondly, I argue that they are (...) long-term effective. Some hearers sometimes detect false testimony, which increases speakers’ incentives for honesty and stabilizes the practice of human communication in which deception is risky and costly. In short, filtering prevents us from forming a large number of beliefs based on false testimony, not by turning each of us into a high-functioning polygraph but by turning the social environment of human communication into one in which such polygraphs are not required. Finally, I argue that these considerations support strong anti-reductionism about testimonial entitlement. (shrink)

A filter of a sentential logic ? is Leibniz when it is the smallest one among all the ?-filters on the same algebra having the same Leibniz congruence. This paper studies these filters and the sentential logic ?+ defined by the class of all ?-matrices whose filter is Leibniz, which is called the strong version of ?, in the context of protoalgebraic logics with theorems. Topics studied include an enhanced Correspondence Theorem, characterizations of the weak algebraizability of ?+ (...) and of the explicit definability of Leibniz filters, and several theorems of transfer of metalogical properties from ? to ?+. For finitely equivalential logics stronger results are obtained. Besides the general theory, the paper examines the examples of modal logics, quantum logics and Łukasiewicz's finitely-valued logics. One finds that in some cases the existence of a weak and a strong version of a logic corresponds to well-known situations in the literature, such as the local and the global consequences for normal modal logics; while in others these constructions give an independent interest to the study of other lesser-known logics, such as the lattice-based many-valued logics. (shrink)

"Eco wittily and enchantingly develops themes often touched on in his previous works, but he delves deeper into their complex nature... this collection can be read with pleasure by those unversed in semiotic theory." —Times Literary Supplement.

In this paper we introduce the notion of filter on the neutrosophic crisp set, then we consider a generalization of the filter’s studies. Afterwards, we present the important neutrosophic crisp filters. We also study several relations between different neutrosophic crisp filters and neutrosophic topologies. Possible applications to database systems are touched upon.

We propose a model of uncertain belief. This models coherent beliefs by a filter, ????, on the set of probabilities. That is, it is given by a collection of sets of probabilities which are closed under supersets and finite intersections. This can naturally capture your probabilistic judgements. When you think that it is more likely to be sunny than rainy, we have{????|????(????????????????????)>????(????????????????????)}∈????. When you think that a gamble ???? is desirable, we have {????|Exp????[????]>0}∈????. It naturally extends the model of (...) credal sets; and we will show it captures all the expressive power of the desirable gambles model. It also captures the expressive power of sets of desirable gamble sets (with a mixing axiom, but no Archimadean axiom). (shrink)

If $\mathcal{F}$ is a filter on $\omega$, we say that $\mathcal{F}$ is Canjar if the corresponding Mathias forcing does not add a dominating real. We prove that any Borel Canjar filter is $F_{\sigma}$, solving a problem of Hrušák and Minami. We give several examples of Canjar and non-Canjar filters; in particular, we construct a $\mathsf{MAD}$ family such that the corresponding Mathias forcing adds a dominating real. This answers a question of Brendle. Then we prove that in all the (...) “classical” models of $\mathsf{ZFC}$ there are $\mathsf{MAD}$ families whose Mathias forcing does not add a dominating real. We also study ideals generated by branches, and we uncover a close relation between Canjar ideals and the selection principle $S_{\mathrm{fin}}$ on subsets of the Cantor space. (shrink)

In Neal Stephenson’s fictional novel, Diamond Age (1995), the protagonist Nell acquires a prototype of what we might today recognise as a highly sophisticated e-reader with a voice-assistant. This e-reader, the “Young Lady’s Illustrated Primer”, uses artificial intelli- gence to serve as Nell’s personal teacher. What is key to the Primer is how it is designed to respond to Nell. The Primer has a theory of Nell – her needs, her real-world situation, her abilities – and it tailors its lessons (...) for her. The Primer is a highly personalised artificially intelligent device. For many readers – myself included – the Primer was a utopian vision of the bespoke digital tutors of the future. The appearance of new media and technologies in the early 2000s all pointed to the near-term reality of devices like Primers. The real-life experience of personalised digital media, though, is so far from Stephen- son’s vision that it is hard to imagine we will ever get there. Nell’s time with the Primer develops her intellectually, emotionally, and physically. Our “bespoke” media experience, by contrast, is more likely to turn us in on ourselves rather than guide us to live well in our societies. Personalised media is making us more like Narcissus: our consumption is driven by personal choices and automated algorithms that reflect what we already want to hear, see, and consume, and we are captivated. Central to our understanding of the problems with the personalisation of digital media are filter bubbles and echo chambers. These phenomena are used interchangeably by some, but in distinct ways by others. I take the position that filter bubbles and echo chambers are distinct phenomena, but ones that raise similar epistemic worries. I begin with a general discussion of filter bubbles and echo chambers, and I introduce the concept of “selective exposure” as central to both phenomena. There is minimal uniformity across uses of the terms “filter bubble” and “echo chamber”. Consequently, I divide the later discussion into two more precise topics: homophily and polarisation. I conclude with some future-looking comments about responsibility and the epistemic risks posed by digital personalisation. (shrink)

It is commonly assumed that personalization technologies used by Google for the purpose of tailoring search results for individual users create filter bubbles, which reinforce users’ political views. Surprisingly, empirical evidence for a personalization-induced filter bubble has not been forthcoming. Here, we investigate whether filter bubbles may result instead from a searcher’s choice of search queries. In the first experiment, participants rated the left-right leaning of 48 queries (search strings), 6 for each of 8 topics (abortion, benefits, (...) climate change, sex equality, immigration, nuclear family, Islam, and taxation). An independent sample of participants were then asked to select one of these queries for each of the 8 topics. With the exception of the topic of Islam, participants were significantly more likely to select a query corresponding to their own political leaning, compared to other queries, explaining between 12% and 39% of the variance. A second experiment investigated the effect of the political leaning of the same queries on the overall political leaning of Search Engine Result Pages (SERPs) in Google Search. The top six results of each SERP were rated collectively by a third group of participants, explaining 36.3% of the variance across all 48 search terms (p < .00001). That is, (1) participants in our experiments tended to select own-side search queries, and (2) using those queries tended to yield own-side search results when using the Google search engine. Our results are consistent with the notion of a self-imposed filter bubble in which query selection plays a salient role. (shrink)

This article explores what John Dewey’s political philosophy can offer in regard to the current crisis in digital democracy. It focuses on two digital mechanisms, the “filter bubble” and the “echo chamber”. While there is a prominent, Dewey-inspired debate on “digital publics” in the literature, a reconstruction of the Deweyan concepts of the public and of shared experience shows that it does not adequately reflect the aspect of situated and embodied experience. Based on this, it is shown that digital (...) media offerings must also be rooted in local contexts of experience in order to answer the challenge of those two problematic mechanisms. (shrink)

To the French critics who originally labelled certain films noir it seemed that a class of Hollywood products had gone darker during the war years – as though a dark filter had been placed over the lens. Films were not designed or marketed as noir, and retrospectively noir's status as a genre is still unsettled. Yet there is widespread interest today in experiencing diverse films as noir, and even in using a Noir Filter in Instagram and video games. (...) Pursuing the filter clue, the noir experience can be thought of as subjection to a dark filtering of narrative. Image filtering styles can help to resolve not only the puzzle of noir's quasi-genre status but also an issue of general interest in aesthetic experience. The use of image filters makes a distinctively powerful contribution to the experience of a work or genre, or to the cultural dominance of an aesthetic regime, due to the unobtrusive formative role it plays in the economy of experience. (shrink)

An adequate moral theory must – or so many philosophers have argued – be compatible with the attitudes and practical requirements of deep friendship. Bernard Williams suggested that the decision procedure required by both deontology and consequentialism inserts a fetishising filter between the natural moral motivation of any normal person to prioritise friends and the decision to act on it. But this injects ‘one thought too many’ into the moral reaction mechanism. It is standardly assumed that virtue ethics is (...) somehow immune to this objection. The present article explores this assumption and finds it wanting in various respects. Virtue ethics filters friendship throughphronesisand thus inserts an extra thought into the mechanism in question. To escape Williams's curse, the only way is to argue that the extra thought required by virtue ethics is not ‘one thought too many’. The article closes with an attempt to show that, contra deontology, the friendship motivation in virtue ethics is derived from the moral virtue, not the intellectual filter, and, contra consequentialism,phronesisdoes not require the maximisation of value. The presumed advantage of virtue ethics must lie in the content of its filter rather than the filter's non-existence. (shrink)

This paper analyses the cultural and biosemiotic bases of human attitudes towards other species. A critical stance is taken towards species neutrality and it is shown that human attitudes towards different animal species differ depending on the psychological dispositions of the people, biosemiotic conditions (e.g. umwelt stuctures), cultural connotations and symbolic meanings. In real-life environments, such as zoological gardens, both biosemiotic and cultural aspects influence which animals are chosen for display, as well as the various ways in which they are (...) displayed and interpreted. These semiotic dispositions are further used as motifs in staging, personifying or de-personifying animals in order to modify visitors’ perceptions and attitudes. As a case study, the contrasting interpretations of culling a giraffe at the Copenhagen zoo are discussed. The communicative encounters and shifting per ceptions are mapped on the scales of welfaristic, conservational, dominionistic, and utilitarian approaches. The methodological approach described in this article integrates static and dynamical views by proposing to analyse the semiotic potential of animals and the dynamics of communicative interactions in combination. (shrink)

I argue that classical counterfactual semantics in the style of Stalnaker, Lewis, and Kratzer validates an inference pattern that is disconfirmed in natural language. The solution is to alter the algorithm we use to handle inconsistency in premise sets: rather than checking all maximally consistent fragments of a premise sets, as in Krazter’s semantics, we selectively remove some of the premises. The proposed implementation starts from standard premise semantics and involves a new ‘filtering’ operation that achieves just this removal. The (...) resulting semantics is interestingly related to the semantics for counterfactuals emerging from Judea Pearl’s causal models framework in computer science: in particular, filtering is a possible worlds semantics counterpart of Pearl’s interventions. (shrink)

Advances in artificial intelligence, as well as its increased presence in everyday life, have brought the emergence of many new phenomena, including an intriguing appearance of what seems to be a variant of body dysmorphic disorder, coined “Snapchat dysmorphia”. Body dysmorphic disorder is a DSM-5 psychiatric disorder defined as a preoccupation with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others. Snapchat dysmorphia is fueled by automated selfie filters that reflect (...) unrealistic sociocultural standard. In this paper, we discuss how body dysmorphic disorder and related body image distortions could arise, using the conceptual resources provided by the active inference framework. We suggest that these disorders involve dysfunctional self-modelling which entails maladaptive internalization of sociocultural preferences during adolescent identity formation. Identity formation is hereby described as cycles of interpersonal active inference that arbitrate between identity exploration and commitment. We propose that impaired self-modelling is unable to reduce interpersonal uncertainty during identity exploration, which, over time, degenerates into uncontrollable epistemic habits that isolate the body image from corrective sensory evidence. In light of these insights, we subsequently explore some of the consequences of image-centered social media platforms on the identity formation process. We conclude that heightened interpersonal uncertainty in this novel context could precipitate the onset of body dysmorphic disorder and related body image distortions, particularly when selfie filters are involved. (shrink)

Schemas contribute to adaptation, filtering novelty though knowledge-expectancy structures, the residue of past contingencies and their consequences. Adaptation requires a balance between flexible, dynamic context-sensitivity and the cognitive efficiency that schemas afford in promoting persistent goal pursuit despite distraction. Affects can form and disrupt schemas. Transient affective experiences systematically alter selectivity of attentiveness to the directly experienced present environment, the internal environment, and to the stored experiences of memory. Enduring personal stylistic predispositions, like implicit motives and affective schemas, influence how (...) experience is perceived, responded to, and integrated; they shape memory and influence present experiential patterns, individually and intersubjectively. Such systematic influences are potential sources of error in the study of memory if not mapped; so far, individual personality differences have just been a source of complication in the literature on emotion-congruent perception and memory. I synthesize what findings there are about how personality differences, emotions, and affects contribute to the structuring and integration of perceptions and memories both directly and by way of hot, affectively-anchored schemas. Case studies from experimental and personality psychology highlight a conception of personality and affective experience relevant to memory research and cognitive science. (shrink)

Semiotic objections to markets urge us not to place a good on the market because of the message that doing so would send. Brennan and Jaworski reject them on the grounds that either the contingent semiotics of a market can be changed or the weakness of semiotic reasons allows them to be ignored. The scope of their argument neglects the impure semiotic objections that claim that the message a market sends causes, constitutes, or involves a nonsemiotic wrong. (...) These are the most compelling class of semiotic objections and are the kind actually advanced in the literature. Rather than focusing on the necessity or contingency of a market's semiotics, we should instead attend to a semiotic objection's most important feature: its purity or impurity. (shrink)

Advances in artificial intelligence, as well as its increased presence in everyday life, have brought the emergence of many new phenomena, including an intriguing appearance of what seems to be a variant of body dysmorphic disorder, coined “Snapchat dysmorphia”. Body dysmorphic disorder is a DSM-5 psychiatric disorder defined as a preoccupation with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others. Snapchat dysmorphia is fueled by automated selfie filters that reflect (...) unrealistic sociocultural standard. In this paper, we discuss how body dysmorphic disorder and related body image distortions could arise, using the conceptual resources provided by the active inference framework. We suggest that these disorders involve dysfunctional self-modelling which entails maladaptive internalization of sociocultural preferences during adolescent identity formation. Identity formation is hereby described as cycles of interpersonal active inference that arbitrate between identity exploration and commitment. We propose that impaired self-modelling is unable to reduce interpersonal uncertainty during identity exploration, which, over time, degenerates into uncontrollable epistemic habits that isolate the body image from corrective sensory evidence. In light of these insights, we subsequently explore some of the consequences of image-centered social media platforms on the identity formation process. We conclude that heightened interpersonal uncertainty in this novel context could precipitate the onset of body dysmorphic disorder and related body image distortions, particularly when selfie filters are involved. (shrink)

Leibniz filters play a prominent role in the theory of protoalgebraic logics. In [3] the problem of the definability of Leibniz filters is considered. Here we study the definability of Leibniz filters with parameters. The main result of the paper says that a protoalgebraic logic S has its strong version weakly algebraizable iff it has its Leibniz filters explicitly definable with parameters.

With the use of a suitable assumption about the structure of the class of experimental filters, it is shown that the sequence of alternating replicas of two filters is their greatest lower bound, as Jauch suggests. A generalization of his suggestion yields the greatest lower bound of a denumerable set of filters. The criteria of admissibility of filters are briefly discussed.

Assuming the consistency of the theory “ZFC + there exists a measurable cardinal”, we construct 1. a model in which the first cardinal κ, such that 2κ > κ+, bears a normal filter F whose associated boolean algebra is κ+-distributive ,2. a model where there is a measurable cardinal κ such that, for every regular cardinal ρ < κ, 2ρ = ρ++ holds,3. a model of “ZFC + GCH” where there exists a non-measurable cardinal κ bearing a normal (...) class='Hi'>filter F whose associated boolean algebra is κ+-distributive. (shrink)

With the troubles of core losses and all-state confined to certain limitations which are the innate traits of permanent magnet synchronous motors, this article develops a command filtered adaptive backstepping approach to follow the track of PMSM’s desired rotor position. To begin with, the RBF neural network technique is utilized to get close to the uncharted nonlinear terms which existed in PMSM’s mathematical model. Meanwhile, an advanced adaptive command filter control methodology is constructed to avoid the computing explosion during (...) the process of backstepping design. Furthermore, to make sure that all the state variables are confined into certain ranges, we employed the barrier Lyapunov function at every step of the controllers construction. In addition, an error compensating mechanism is proposed to neutralize filtering errors and only one adaptive law is required. At last, simulation results bear out the superiority of the aforementioned control scheme. (shrink)

We characterize (both from a syntactic and an algebraic point of view) the normal K4-logics for which unification is filtering. We also give a sufficient semantic criterion for existence of most general unifiers, covering natural extensions of K4.2⁺ (i.e., of the modal system obtained from K4 by adding to it, as a further axiom schemata, the modal translation of the weak excluded middle principle).

In this article we explore the relationship between semiotic analysis of images and quantitative analysis of vast image corpora, in particular the work produced by Lev Manovich and the Cultural Analytics Lab, called “Media Visualization.” Media Visualization has been chosen as corpus because of its metavisual operation (images are visualized and analyzed by images) and its innovating way of conceiving analysis: by visual instruments. In this paper semiotics is used as an approach to Media Visualization and taken as an (...) object of study as well, especially visual semiotics. In this sense, a comparison between visual semiotics (close reading of small corpora) and quantitative analyses of images (distant reading of vast collections) are conducted from a semiotic point of view. Post-Greimassian semiotics guides this study with respect to the issue of the image-within-an-image and metavisual visualization; Peircean semiotics is employed to explain and develop the notion of diagram. (shrink)

The Filter Dichotomy says that every uniform nonmeager filter on the integers is mapped by a finite-to-one function to an ultrafilter. The consistency of this principle was proved by Blass and Laflamme. A medial limit is a universally measurable function from [Formula: see text] to the unit interval [0, 1] which is finitely additive for disjoint sets, and maps singletons to 0 and ω to 1. Christensen and Mokobodzki independently showed that the Continuum Hypothesis implies the existence of (...) medial limits. We show that the Filter Dichotomy implies that there are no medial limits. (shrink)

The present paper is thought as a formal study of distributive closure systems which arise in the domain of sentential logics. Special stress is laid on the notion of a C-filter, playing the role analogous to that of a congruence in universal algebra. A sentential logic C is called filter distributive if the lattice of C-filters in every algebra similar to the language of C is distributive. Theorem IV.2 in Section IV gives a method of axiomatization of those (...) filter distributive logics for which the class Matr (C) prime of C-prime matrices (models) is axiomatizable. In Section V, the attention is focused on axiomatic strengthenings of filter distributive logics. The theorems placed there may be regarded, to some extent, as the matrix counterparts of Baker's well-known theorem from universal algebra [9, § 62, Theorem 2]. (shrink)

We explore the problem of constructing maximal and unbounded filters on computable posets. We obtain both computability results and reverse mathematics results. A maximal filter is one that does not extend to a larger filter. We show that every computable poset has a \Delta^0_2 maximal filter, and there is a computable poset with no \Pi^0_1 or \Sigma^0_1 maximal filter. There is a computable poset on which every maximal filter is Turing complete. We obtain the reverse (...) mathematics result that the principle "every countable poset has a maximal filter" is equivalent to ACA₀ over RCA₀. An unbounded filter is a filter which achieves each of its lower bounds in the poset. We show that every computable poset has a \Sigma^0_1 unbounded filter, and there is a computable poset with no \Pi^0_1 unbounded filter. We show that there is a computable poset on which every unbounded filter is Turing complete, and the principle "every countable poset has an unbounded filter" is equivalent to ACA₀ over RCA₀. We obtain additional reverse mathematics results related to extending arbitrary filters to unbounded filters and forming the upward closures of subsets of computable posets. (shrink)

In this reply to James H. Fetzer’s “Minds and Machines: Limits to Simulations of Thought and Action”, I argue that computationalism should not be the view that (human) cognition is computation, but that it should be the view that cognition (simpliciter) is computable. It follows that computationalism can be true even if (human) cognition is not the result of computations in the brain. I also argue that, if semiotic systems are systems that interpret signs, then both humans and computers (...) are semiotic systems. Finally, I suggest that minds can be considered as virtual machines implemented in certain semiotic systems, primarily the brain, but also AI computers. In doing so, I take issue with Fetzer’s arguments to the contrary. (shrink)