Logical form and logical analysis as the search for it have been introduced during the development of logic and analytical philosophy and are still widely considered as key tools or methods for the solution of philosophical puzzles. It is instructive to have a look at a criticism of these presupositions and I present Wittgenstein as the author who provides such a criticism. I present a development of his view of logical form which went from the thesis of the ineffability of (...) logical form to the denial of the meaningfulness of the notion of logical form as such. This refusal is linked to Wittgenstein’s abandonment of the idea of the language of pure experience. The method of philosophical therapies is presented as an alternative to logical analysis and this methodology is linked with Wittgenstein’s consideration of game and family resemblance. (shrink)

This volume of the Logica Yearbook series brings together articles presented at the annual international symposium Logica 2017, Hejnice, the Czech Republic. The articles range over mathematical and philosophical logic, history and philosophy of logic, and the analysis of natural language.

As the foundation of our rationality, logic has traditionally been considered fixed, stable and constant. This conception of the discipline has been challenged recently by the plurality of logics and in this book, Pavel Arazim extends the debate to offer a new view of logic as dynamic and without a definite, specific shape. The Problem of Plurality of Logics examines the origins of our standard view of logic alongside Kant's theories, the holistic view, the issue of logic's pragmatic (...) significance and Robert Brandom's logical expressivism. Arazim then draws on proof-theoretical approaches to present a convincing argument for a dynamic version of logical inferentialism, which opens space for a new freedom to modify our own logic. He explores the scope, possibilities and limits of this freedom in order to highlight the future paths logic could take, as a motivation for further research. Marking a departure from logical monism and also from the recent doctrine of logical pluralism in its various forms, this book addresses current debates concerning the expressive role of logic and contributes to a lively area of discussion in analytic philosophy. (shrink)

Logical pluralism as a thesis that more than one logic is correct seems very plausible for two basic reasons. First, there are so many logical systems on the market today. And it is unclear how we should decide which of them gets the logical rules right. On the other hand, logical monism as the opposite thesis still seems plausible, as well, because of normativity of logic. An approach which would manage to bring a synthesis of both logical pluralism and logical (...) monism is called for. I review the possible forms of logical pluralism and render them more plausible. I thus arrive at logical dynamism, a synthesis of various pluralisms and monism focused on how logic develops. (shrink)

Various attempts at demarcating logic were undertaken, many of them based on specific understanding of how logical knowledge is formal and not material. MacFarlane has persuasively shown that general idea of formality of logic can be understood in various ways. I take two of the accounts of formality, namely the requirement of conservativity and the requirement of schematicity of logical vocabulary, into consideration as promising candidates to make the all too unclear notion of formality more precise and study to what (...) degree they could be considered as either necessary or sufficient conditions for logicality of some piece of vocabulary. Finding both notion unsatisfactory, as they stand, I propose combining them and envisage a hierarchy of logicality of expressions of a given language. Such a hierarchy is complicated and not linear, yet still offers a valuable explication of both the range and pragmatic significance of logic, if we combine it with logical expressivism. (shrink)

Henri Bergson se za svého života těšil velké popularitě. Přes jistý ústup ze slávy jeho filosofie i v druhé polovině dvacátého století inspirovala např. Gillese Deleuze. Nicméně analytická filosofie Bergsonovi dosud mnoho pozornosti nevěnovala. Ačkoli na první pohled skutečně s analytickou filosofií nemá mnoho společného, najdeme v jeho díle některé myšlenky, které by si zasloužily, aby je analytická filosofie zhodnotila. Zaměříme se na Bergsonovo pojetí špatně položených otázek, které je v mnohém podobné pojetí logických pozitivistů. Dále navrhneme, v čem může (...) spočívat jeho přínos pro teorii pravidel a normativistickou teorii významu. Obě témata jsou zde především programaticky nastíněna, jejich hlubší rozpracování je úkol pro další práci. (shrink)

Inferentialism has brought important insights into the nature of meanings. It breaks with the representationalist tradition that sees meanings as constituted primarily by representing some extra-linguistic reality. Yet the break with tradition should be pursued further. Inferentialists still regard meanings as static, and they still do not entirely abandon the idea of fully determined meaning. Following Davidon’s ideas about meanings as constituted only in the course of a specific conversation, I propose a dynamic account of what meanings are. They are (...) described as entities belonging to the dynamic realm of Henri Bergson’s duration. The inhabitants of this realm live in constant movement and development which is more essential to them than the stages that this development goes through. My account brings about a rejection of the notion of the strict literal meaning and therewith also of the contrasting notions such as ambiguity. Meaning is understood as a dynamic entity that is characterized rather by its history than by its nature. (shrink)

Inferentialism has brought important insights into the nature of meanings. It breaks with the representationalist tradition that sees meanings as constituted primarily by representing some extra-linguistic reality. Yet the break with tradition should be pursued further. Inferentialists still regard meanings as static, and they still do not entirely abandon the idea of fully determined meaning. Following Davidon’s ideas about meanings as constituted only in the course of a specific conversation, I propose a dynamic account of what meanings are. They are (...) described as entities belonging to the dynamic realm of Henri Bergson’s duration. The inhabitants of this realm live in constant movement and development which is more essential to them than the stages that this development goes through. My account brings about a rejection of the notion of strict literal meaning and therewith also of the contrasting notions such as ambiguity. Meaning is understood as a dynamic entity that is characterized rather by its history than by its nature. (shrink)

Logical pluralism from historical perspective -The plurality of logics is understood as a challenge to seek a deeper understanding of the na- ture and import of logic. Two basic approaches to demarcation of logic are considered, the model-theoretic and the proof-theoretic one. Investigation of the history which led to these two appraoches identifies the postion of logic in Kant's epistemology as crucial for the devel- opment. An analogical development from Kant's conception of geometry to the plurality of geometric theories leads (...) to a holistic view both of geometry and of logic. It furthermore proves essential to understand the pragmatic import of logic. Given the problems tied to the attempts to demarcate logic, inferentialism and logical expressivism are arrived at as jointly provid- ing the most appropriate account. These approaches are developed into a conception which stresses, in line with the historical perspective of the work, the ability of logic to develop. (shrink)

This volume of the Logica Yearbook series brings together articles presented at the annual international symposium Logica 2015, Hejnice, the Czech Republic. The articles range over mathematical and philosophical logic, history and philosophy of logic, and the analysis of natural language.

Traxler, Pickering, and Clifton found that ambiguous sentences are read faster than their unambiguous counterparts. This so-called ambiguity advantage has presented a major challenge to classical theories of human sentence comprehension because its most prominent explanation, in the form of the unrestricted race model, assumes that parsing is non-deterministic. Recently, Swets, Desmet, Clifton, and Ferreira have challenged the URM. They argue that readers strategically underspecify the representation of ambiguous sentences to save time, unless disambiguation is required by task demands. When (...) disambiguation is required, however, readers assign sentences full structure—and Swets et al. provide experimental evidence to this end. On the basis of their findings, they argue against the URM and in favor of a model of task-dependent sentence comprehension. We show through simulations that the Swets et al. data do not constitute evidence for task-dependent parsing because they can be explained by the URM. However, we provide decisive evidence from a German self-paced reading study consistent with Swets et al.'s general claim about task-dependent parsing. Specifically, we show that under certain conditions, ambiguous sentences can be read more slowly than their unambiguous counterparts, suggesting that the parser may create several parses, when required. Finally, we present the first quantitative model of task-driven disambiguation that subsumes the URM, and we show that it can explain both Swets et al.'s results and our findings. (shrink)

A review of Jozef Kovalčik´s and Max Ryynänen´s Aesthetics of Popular Culture.

Chapter One: Constructions. Entities, constructions, and functions When one travels from Los Angeles to New York, going, say, by way of St. Louis, Chicago, ...

It is well known that the manner in which a definitely descriptive term contributes to the meaning of a sentence depends on the place the term occupies in the sentence. A distinction is accordingly drawn between ordinary contexts and contexts variously termed non-referential, intensional, oblique, or opaque. The aim of the present article is to offer a general account of the phenomenon, based on transparent intensional logic. It turns out that on this approach there is no need to say (as (...) Frege does) that descriptive terms are referentially ambiguous or to deny (as Russell does) that descriptive terms represent self-contained units of meaning. There is also no need to tolerate (as Montague does) exceptions to the Principle of Functionality. The notion of an ordinary (i.e., non-intensional) context is explicated exclusively in terms of logical structure and it is argued that two aspects of ordinariness (termed hospitality and exposure) must be distinguished. (shrink)

We prove an exponential lower bound on the length of cutting plane proofs. The proof uses an extension of a lower bound for monotone circuits to circuits which compute with real numbers and use nondecreasing functions as gates. The latter result is of independent interest, since, in particular, it implies an exponential lower bound for some arithmetic circuits.

I. The framework. 1, Aristotle's project and methods. 2, The perceptual capacity of the soul. 3, The sensory apparatus. 4, The common sense and the related capacities -- II. The terminology. 1, Overlooked occurrences of the phrase 'common sense'. 2, De anima III.1 425a27. 3, De partibus animalium IV.10 686a31. 4, De memoria et reminiscentia 1 450a10. 5, De anima III.7 431b5. 6, Conclusions on the terminology -- III. Functions of the common sense. 1, Simultaneous perception and cross-modal binding. 2, (...) Perceptual discrimination. 3, Waking, sleep, and control of the senses. 4, Perceiving that what we see and hear, and monitoring of the senses. 5, Other roles of the common sense -- Conclusion. (shrink)

In this paper we argue that Aristotle operates with a particular theoretical model in his explanation of animal locomotion, what we call the ‘centralized incoming and outgoing motions’ model. We show how the model accommodates more complex cases of animal motion and how it allows Aristotle to preserve the intuition that animals are self-movers, without jeopardizing his arguments for the eternity of motion and the necessary existence of one eternal unmoved mover in Physics VIII. The CIOM model helps to elucidate (...) Aristotle’s two central yet problematic claims, namely that the soul is the efficient cause of animal motion and that it is the internal supporting-point necessary for animal motion. Moreover, the CIOM model helps us to explain the difference between voluntary, involuntary and non-voluntary motions, and to square Aristotle’s cardiocentrism with his hylomorphism, but also, more generally, it provides an interesting way of thinking about the place of intentionality in the causal structure of the world. (shrink)

2 Popper's Logical Definition of Verisimilitude. 3 Popper's Probabilistic Definition of Verisimilitude. 4 Conclusion.

In this article I explore Maimon’s role in the evolution of Kant’s understanding of the function of the history of philosophy in philosophical enquiry. Kant is often viewed as holding an ambivalent...

Motivated by the problem of finding finite versions of classical incompleteness theorems, we present some conjectures that go beyond NP ≠ coNP. These conjectures formally connect computational complexity with the difficulty of proving some sentences, which means that high computational complexity of a problem associated with a sentence implies that the sentence is not provable in a weak theory, or requires a long proof. Another reason for putting forward these conjectures is that some results in proof complexity seem to be (...) special cases of such general statements and we want to formalize and fully understand these statements. Roughly speaking, we are trying to connect syntactic complexity, by which we mean the complexity of sentences and strengths of the theories in which they are provable, with the semantic concept of complexity of the computational problems represented by these sentences. -/- We have introduced the most fundamental conjectures in our earlier works. Our aim in this article is to present them in a more systematic way, along with several new conjectures, and prove new connections between them and some other statements studied before. (shrink)

The boundary between analytic and synthetic sentences is well definable. Quine’s attempt to make it vague is based on a misunderstanding: instead of freeing semantics from shortcomings found, e.g. in Carnap’s work, Quine actually rejects semantics of natural language and replaces it by behavioristically articulated pragmatics. Semantics of natural language as a logical analysis is however possible and it can justify hard and fast lines between analyticity and syntheticity.

Russian neo-Kantianismʼs status in the history of the development of Russian philosophy is an important, but poorly presented in scientific publications, issue is revealed in the article. With some exceptions, which are represented by a number of few, but informative and informative articles and a monograph, the problem remains without proper reception in the scientific discourse of our time. Russian neo-Kantianism, however, leaving aside the question of what is the phenomenon of Russian neo-Kantianism, it is impossible to productively and consistently (...) actualize the content of Russian neo-Kantians and, moreover, to show their significance in the history of Russian philosophical and socio-humanitarian thought in general. Three key difficulties stand out: 1) the question of originality and the related theme of the independence of the philosophical direction (originality, independence and originality – differ from each other, but are united in their immanent orientation); 2) Russian neo-Kantianism, which in many ways seems to be the most difficult task for researchers engaged in historical and philosophical reconstruction; 3) the question remains ambiguous as to whether Russian neo-Kantianism is a continuation of the German tradition or whether it is a direction of Russian philosophy of thought. Russian neo-Kantianism, the three difficulties identified in the reception of the phenomenon of Russian neo-Kantianism taken as a whole, are consistently revealed in the content of the proposed article, supplemented by a brief overview of the most systemic positions of Russian philosophers, ranked among Russian neo-Kantianism. Overcoming the indicated difficulties, which undoubtedly affect the objective disclosure of the creativity of each representative of Russian neo-Kantianism or thinkers related to them, seems appropriate not only from the standpoint of the history of philosophy, but also for actualizing the heritage of philosophers in the conditions of modern socio-humanitarian pragmatics. Russian neo-Kantianism The author of the article suggests that one of the ways to overcome the ambiguity of the definition of Russian neo-Kantianism in the history of Russian thought may be, firstly, a more detailed consecration of the activities of Russian neo-Kantians in the historical and philosophical literature, and secondly, a comprehensive representation of this direction, including studies of individual personalities and their works. Despite the controversial and polemical nature of the task, its formulation is necessary for the objectivity of the meaning of Russian thought in the global context. (shrink)

The article is devoted to identifying the concept of the meaning of life in the critical philosophy of A.I. Vvedensky, where special attention is paid to the methodological foundations and the historical and philosophical context. The formulation of the question about the meaning of life is one of the ultimate questions in philosophy, the answer to which makes it possible to determine the motives of human activity. In Vvedenskyʼs philosophy, the problem of goal-setting in life is revealed in the prism (...) of a key research intention – the construction of a scientifically revised worldview based on the principles of criticism. As a result, the question of life and its purpose is reduced to the formulation of the question of the logical permissibility and boundaries of questioning. The article attempts to reconstruct the philosopherʼs reasoning and identify the most significant definitions, which include morality, mental life, and the purpose of life. The disclosure of the concept of life in Vvedenskyʼs philosophy invariably requires consideration of the context in which the development of the philosopherʼs ideas takes place. Based on a comprehensive analysis, it is concluded that the concept of life is an extension of the main goal of Vvedenskyʼs research – the disclosure of the conditions for the formation of a reliable worldview, focused on the principles of scientific knowledge in accordance with moral values. Another important consequence is the provision on the priority of morality in relation to scientific and philosophical knowledge. The foundations of morality, to which the meaning of life belongs, can be presented only in a special form of applicability of critical reason – critical faith. Thus, the question of the specifics of critical metaphysics and the importance of differentiation of types and forms of faith in the work of the Russian neo-Kantian are clarified. (shrink)

The article focuses on process management in public administration using the specific case study of the statutory city of Ostrava. Based on the selected part of the PAPRIS methodology, the process management is verified, and conclusions from the application of information system e-SMO are generalized. Ostrava is third the biggest city in Czech Republic with approximately 320 thousand citizen. Article describes experiences with SW implements, which are used for model of process in public administration. Particulary at local authority of Ostrava (...) town. Model of process is a basis for reengineering of process in state administration and preparation for implementation of big information systems. Mapping of process is providing implement and confirmation methodology to identify existing processes. Problem with its using consist in that, senior manager don’t informs, what organization is determination by processes. If are not described in given to organization current processes, or how would have had look new optimum processes, will not endeavour about reengineering successful. Procedural analysis namely offer tool and check methodology to identification current suit and it is possible him use either as instruction for reengineering function handling administrative and self-rule activities. Purpose of the article: The PAPRIS methodology was used when defining the objectives for implementation of the information system for public administration. This methodology has been elaborated by one of the authors and published in a very general scheme when solving many case studies,,. We assume that the PAPRIS is primarily a methodology with incorporated elements of procedural approach for project management in public administration information systems. The specific supporting process of communication between the client and the e-SMO system has been chosen for verification. The model of supporting communication process, created by ARIS tools, is crucial, and the structure of scripts is subsequently made. The aim of this article is to verify that the methodology is sufficient and appropriate to manage such a large project such, undoubtedly, is the e-SMO. Methodology/methods: Defined productive and non-productive processes with their defined process cuts represent a crucial category for the process structure of IS projects. This is fully accepted by the PAPRIS methodology. Process cuts are understood, in the logic modelling according to the PAPRIS methodology, as clearly defined logic directional cuts in three-dimensional space of all project processes. The process set is systemically categorized, in a given logic directional cut, into mutually disjoint process subsets, which are characterized by this particular directional operator. The directional operator always has a clear logical allocation that is based on the construction of a process view. Theoretically, an infinite number of process views can be used. One of the important issues in a methodology for the case studies includes the size of the research sample. It is usually assumed that there is no ideal number of cases and that the number between four and ten usually provides good results. Other authors defining against any quantitative standards for any determination of the sample size of the case studies, since such an approach denies the internal logic of this methodology and the richness of the information obtained from participants in the research. Research which is carried out using case studies does not aspire on compliance with the requirement the representativeness of the sample.. Methodology of case studies is among the established guidelines of qualitative research. Research on using case studies in the last 30 years has seen an extraordinary increase in social-scientific research, including research on business and management. Scientific aim: The essential aim of this study is to describe the way the process cut defines a productive process and non-productive process, in accordance with the PAPRIS methodology using the specific example. While the triggering mechanism of the project production process is an event causing its own production - i.e. the specific output with added value for the customer, the project of non-productive process is caused by the project management event. Therefore, it is caused by the need to control, monitor, track, inspect, evaluate outputs, decide and regulate the project implementation. Findings: Within the support of the communication process, two examples were used to verify the methodology. The global perspective on the process was created in ARIS tools and the communication between the call centre and the client was made in Visio tools. The PAPRIS methodology is based on the concept of process variability, which has been clearly formulated. The fundamental direction of the process development, anticipated changes and the opportunity to react to them in accordance with defined objectives of the PAIS project are guaranteed. (shrink)

We give proofs of the effective monotone interpolation property for the system of modal logic K, and others, and the system IL of intuitionistic propositional logic. Hence we obtain exponential lower bounds on the number of proof-lines in those systems. The main results have been given in [P. Hrubeš, Lower bounds for modal logics, Journal of Symbolic Logic 72 941–958; P. Hrubeš, A lower bound for intuitionistic logic, Annals of Pure and Applied Logic 146 72–90]; here, we give considerably simplified (...) proofs, as well as some generalisations. (shrink)

Roman Catholic and Eastern Orthodox theologians claim that the unique event of Christ’s sacrifice on Calvary is present in Eucharistic liturgies. A popular explanatory strategy for this miraculous presence suggests that due to its supernatural character the Eucharist “conquers time,” transcends its boundaries, and allows for temporal coincidence of two chronologically distant events. I discuss the four main approaches within this strategy that can be discovered in contemporary theological writings. The first approach implies a time travel of the Calvary event. (...) The second suggests the time travel of Eucharistic participants. The third eliminates the chronological distance by relocating one of the events into a timeless reality. The fourth assumes multilocation of the event across time. I argue that each of these approaches is untenable on philosophical or theological grounds. (shrink)

In his article "world and essence" ("phil. Rev." 1970, Pages 461-492) plantinga submitted that (a) individuals have essences and (b) the essence of an individual is a non-Trivial property which can be completely known only to god. In my note it is shown that on plantinga's own definitions each individual x has exactly one essence, The trivial property of x-Identity. Thus (b) fails.

Aristotle's notion of experience plays an important role in his epistemology as the link between perception and memory on the one side, and higher cognitive capacities on the other side. However, Aristotle does not say much about it, and what he does say seems inconsistent. Notably, some passages suggest that it is a non-rational capacity, others that it is a rational capacity and that it provides the principles of science. This paper presents a unitary account of experience. It explains how (...) experience grows from perception and memory into a rational capacity, and in what way it provides the principles. (shrink)

The subject of the article is the philosophical and cultural methodology of digital "virtual reality", comparing the declarations of developers with the practical possibilities and social consequences of using such technologies. The developers presented projects of online digital content services for all five senses using special equipment (glasses, headphones, interactive gloves, joysticks, costumes, printers of smells and tastes, etc.). It was assumed that virtual reality would surpass the reliability of previous multimedia content and interactive computer games, and the persuasiveness and (...) attractiveness of traditional technical means of art and the press. Failure to fulfill these promises has led to significant losses since 2022 for leading companies developing digital virtual reality technologies Meta (recognized by the court as an extremist organization on 03/21/2022, activity is limited in the territory of the Russian Federation), Microsoft HapticLinks, Cave, AlloSphere, Teslasuit, VRealizer. There was a need to assess how and to what extent the methodology used and the predicted capabilities of digital virtual reality were correct. Philosophical and cultural analysis as a research method reveals: the developers of digital virtual reality promised the methodologically impossible, reducing human perception to the "sum" of the external "five senses" out of connection with the "self", inner sensitivity, bodily self-perceptions. A person is only partially amenable to algorithmized digital interaction; a critical barrier to digital virtuality is the socio-cultural identity of society and personality. The novelty of the results of the analysis lies in the conclusion: digital virtual reality in many respects is fundamentally inferior in effectiveness to traditional technical means of sensory and emotional impact and cognition, used both for creative and destructive purposes. In terms of creative potential, digital virtual reality is inferior to the technical means of art, science, education, upbringing, etc., and in terms of destructive capabilities, it is already used in the press and other mass communications technologies for manipulating public and individual consciousness, as well as psychotropic substances that cause addiction. National regulation of the development of digital "virtual reality" is recommended, aimed at protecting and developing the socio-cultural identity of Russian citizens and society, as well as for cognitive and educational purposes. It is recommended to limit the remote use of such developments to trusted domestic Internet services. (shrink)

The paper gives a survey of results related to a problem of automatic recognizing important properties of non-classical logics.