The aim of this article is to shed light on an understudied aspect of Giordano Bruno's intellectual biography, namely, his career as a mathematical practitioner. Early interpreters, especially, have criticized Bruno's mathematics for being “outdated” or too “concrete”. However, thanks to developments in the study of early modern mathematics and the rediscovery of Bruno's first mathematical writings (four dialogues on Fabrizio's Mordente proportional compass), we are in a position to better understand Bruno's mathematics. In particular, this article aims to reopen (...) the question of whether Bruno anticipated the concept of infinitesimal quantity. It does so by providing an analysis of the dialogues on Mordente's compass and of the historical circumstances under which those dialogues were written. (shrink)

ArgumentThe purpose of this paper is to provide an analysis of Giordano Bruno’s conception of mathematics. Specifically, it intends to highlight two aspects of this conception that have been neglected in previous studies. First, Bruno’s conception of mathematics changed over time and in parallel with another concept that was central to his thought: the concept of infinity. Specifically, Bruno undertook a reform of mathematics in order to accommodate the concept of the infinitely small or “minimum,” which was introduced at a (...) later stage. Second, contrary to what Héléne Védrine claimed, Bruno believed that mathematical objects were mind-dependent. To chart the parallel development of the conceptions of mathematics and infinity, a seven-year time span is considered, from the publication of Bruno’s first Italian dialogue (La cena de le ceneri,1584) to the publication of one of his last Latin works (De minimo, 1591). (shrink)

Ever since its foundation in 1540, the Society of Jesus had had one mission—to restore order where Luther, Calvin and the other instigators of the Reformation had brought chaos. To stop the hemorrhage of believers, the Jesuits needed to form a united front. No signs of internal disagreement could to be shown to the outside world, lest the congregation lose its credibility. But in 1570s two prominent Jesuits, Cristophorus Clavius and Benito Perera, had engaged in a bitter controversy. The issue (...) at stake had apparently nothing to do with the values on which Ignazio of Loyola had built the Society of Jesus. And yet the dispute between Clavius and Perera was matter of concern for the entire Jesuit community. They were... (shrink)

La discussione delle grandi narrazioni storiografiche del pensiero medievale. Il definirsi di una prospettiva teorica e di una storiografica attraverso il confronto con Scoto Eriugena. La ricerca di un senso e il problema di Dio. Gli anni della guerra e l'importanza della prassi.

At the turn of the seventeenth century, Bruno and Cavalieri independently developed two theories, central to which was the concept of the geometrical indivisible. The introduction of indivisibles had significant implications for geometry – especially in the case of Cavalieri, for whom indivisibles provided a forerunner of the calculus. But how did this event occur? What can we learn from the fact that two theories of indivisibles arose at about the same time? These are the questions addressed in this paper. (...) Relying on the methodology of “historical epistemology”, this paper asserts that the similarities and differences between the theories of Bruno and Cavalieri can be explained in terms of “shared knowledge”. The paper shows that the idea – on which both Bruno and Cavalieri build – that geometrical objects are generated by motion was part of the mathematical culture of the time. Tracing this idea back to its Pythagorean origins thus sheds light on the relationship between motion and continuum in mathematics. (shrink)

Most studies of René Descartes’s legacy have focused on the novelty of his ideas, but little has been done to uncover the conditions that allowed these ideas to spread. Seventeenth-century Europe was already a small world—it presented a high degree of connectedness with a few brokers bridging otherwise disparate regions. A communication network known as the Republic of Letters enabled scholars to trade ideas—including Descartes’s—by means of correspondence. This article offers an analysis—both qualitative and quantitative—of a corpus of letters written (...) during Descartes’s lifetime and mentioning his name. The aim is to unveil the factors that drove the diffusion of Descartes’s ideas. The results are twofold. First, a close reading of the letters reveals that they were not used to create awareness about Descartes and his works but rather to discuss his ideas. Second, a network analysis of the letters shows that ideas do not spread like viruses, thus undermining the ‘social contagion’ model, and that weak ties are not as effective in promoting innovations as they are in circulating information. (shrink)

The purpose of this paper is to show the argument-establishing features of a Renaissance altarpiece. Looking to Panofsky’s seminal studies and to more recent contributions, this essay shows how in a special environment like the Florentine pre-Renaissance, people could easily relate to the evocative and contrastive potential of images. In the Santa Lucia de’ Magnoli Altarpiece painted by Domenico Veneziano we see an interesting dialogue between the main piece and the predella panels. This juxtaposition can be formalized into a basic (...) argumentative text. (shrink)

La discussione medievale sul tema dei futuri contingenti pone al centro dell’attenzione, da un lato, il modo di concepire conoscenza e potenza divine e, dall’altro, lo statuto degli eventi futuri. Pier Damiani, monaco dell’XI secolo, distingue fra la possibilità divina di mutare le conseguenze del passato e quella di produrre un passato interamente diverso. Pedro Damian, protagonista del racconto di Borges, riscatta il suo comportamento giovanile producendo poco alla volta un altro, diverso, passato. La potenza della memoria invece della potenza (...) di Dio. (shrink)

L’articolo esamina l’episodio della _spogliazione_ di Francesco d’Assisi intersecando la lettura delle prime narrazioni della vita del santo e dei romanzi contemporanei che hanno raccontato la sua vicenda. L’atto di rinuncia ai beni paterni e la rottura che esso determina lungo il corso della vita di Francesco vengono posti in relazione al tema della follia, che costituisce un cambio del paradigma con cui guardare il mondo e la sua logica. La scelta di Francesco di rinunciare al potere e alla proprietà (...) proprie del mondo, oppone ad esse una nuova logica che si traduce non nella rinuncia al mondo, ma nella capacità di trascenderlo rimanendo al suo interno. _The article examines the episode of the _dispossession_ of Francis of Assisi by intersecting the reading of the first narrations of the life of the saint and contemporary novels that have told his story. The act of renouncing his father's goods and the rupture that it determines along the course of Francis' life are placed in relation to the theme of folly, which constitutes a change of paradigm with which to look at the world and its logic. The choice of Francis to renounce the power and the property of the world, opposes to them a new logic that is translated not in the renunciation of the world, but in the capacity to transcend it by remaining within it_. (shrink)

The problem of the visio Dei : this refers to understand what God is, not who he is. The key issue is the analogy with the structure of sense knowledge, characterized by the identification between the knowing subject and object known. Love, understood as sensus animae , operates by means of a knowledge identifying through a modification of the feeling, even if with one major difference compared to the other senses, as essentially characterized by freedom. The declination of love and (...) freedom is one of the possible uses of love. Alternate paths can be based on the doctrine of the double image of the man with the result that more is love as sensus animae , another is its rectitudo as identified in the decor . The relationship that develops between the knower and the first term of the cognitive changes, overcoming the opposition of subject and object of his rational knowledge. In the cognitive of ' love , the object is the mirror through which the subject must become transparent to itself. (shrink)

Teodicea e relazione. La teologia come garanzia di giustizia nella dialettica tra ordine e libero arbitrio. Teodicy and relationship. The theology as guarantee of justice in the dialectics between order and free will.

COVID-19 is unique in that it is the first global pandemic occurring amidst a crowded information environment that has facilitated the proliferation of misinformation on social media. Dangerous misleading narratives have the potential to disrupt ‘official’ information sharing at major government announcements. Using an interrupted time-series design, we test the impact of the announcement of the first UK lockdown on short-term trends of misinformation on Twitter. We utilise a novel dataset of all COVID-19-related social media posts on Twitter from the (...) UK 48 hours before and 48 hours after the announcement. We find that while the number of tweets increased immediately post announcement, there was no evidence of an increase in misinformation-related tweets. We found an increase in COVID-19-related bot activity post-announcement. Topic modelling of misinformation tweets revealed four distinct clusters: ‘government and policy’, ‘symptoms’, ‘pushing back against misinformation’ and ‘cures and treatments’. (shrink)

L’introduzione al fascicolo Analogia e medioevo sive vent’anni di analogie presenta il numero 18 di "Doctor Virtualis" e traccia le tappe fondamentali della rivista. Si delineano dapprima alcune linee della storia della rivista e le sue ispirazioni teoriche e storiografiche principali, per poi mettere in luce le ragioni della rilevanza del tema dell’analogia, come oggetto utilizzato e pensato nei secoli medievali e come strumento di ricerca storiografica, e infine si conclude con l’articolazione del fascicolo. The introduction to the issue Analogy (...) and the Middle Ages sive twenty years of analogies presents issue n. 18 of Doctor Virtualis and traces the milestones of the journal. It first sketches some lines of the history of the journal and its main theoretical and historiographical inspirations, then highlights the reasons for the relevance of the theme of analogy, as an object used and thought of in the medieval centuries and as a tool for historiographical research, and finally concludes with the articulation of the issue. (shrink)

Involving children in research studies requires obtaining parental permission. A school-based intervention to delay/prevent waterpipe use for 7th and 8th graders in Qatar was developed, and parental permission requested. Fifty three percent (2308/4314) of the parents returned permission forms; of those 19.5% of the total (840/4314) granted permission. This paper describes the challenges to obtaining parental permission. No research to date has described such challenges in the Arab world.

Objetivo: El siguiente artículo tiene como propósito la revisión de la literatura existente cuyo enfoque sea las herramientas tecnológicas utilizadas para el abordaje del paciente con síntomas de salud mental, de manera virtual, para describir las ventajas, la eficacia, la efectividad y los beneficios de estas herramientas, a partir de la literatura encontrada. Métodos: se realizó una búsqueda en las bases de datos Pubmed, Elsevier, UpToDate, Journal of Medical Internet Research y Google Académico. Se identificó un total de 58 artículos (...) que versan sobre la eficacia y efectividad de las diferentes modalidades digitales (tales como aplicaciones, cuestionarios en línea, mensajes de texto, etc.) que tratan la salud mental. Resultados: la búsqueda realizada arrojó un total de 58 artículos. Tras la eliminación de duplicados, el número fue de 50 artículos. Después de la caracterización de la información basada en la revisión de la totalidad del contenido, fueron elegidos 30 artículos para que sirvieran como base para la construcción de la síntesis de datos. Conclusiones: las herramientas virtuales utilizadas en salud mental ofrecen un sin fin de beneficios para prestar un servicio con un acceso más sencillo a la población, de forma económica y efectiva, sin temor a que los pacientes sean estigmatizados al momento de buscar ayuda, como se pudo evidenciar en los artículos presentados. Además, las herramientas digitales utilizadas en psiquiatría han demostrado ser eficaces y seguras, sin embargo, son de reciente aparición y cuentan con una cantidad limitada de estudios que demuestren objetivamente su eficacia en esta área. (shrink)

In recent decades, the analysis of phraseology has made use of the exploration of large corpora as a source of quantitative information about language. This paper intends to present the main lines of work in progress based on this empirical approach to linguistic analysis. In particular, we focus our attention on some problems relating to the morpho-syntactic annotation of corpora. The CORIS/CODIS corpus of contemporary written Italian, developed at CILTA – University of Bologna (Rossini Favretti 2000; Rossini (...) Favretti, Tamburini, De Santis in press), is a synchronic 100-million-word corpus and is being lemmatised and annotated with part-of-speech (POS) tags, in order to increase the quantity of information and improve data retrieval procedures (Tamburini 2000). The aim of POS tagging is to assign each lexical unit to the appropriate word class. Usually the set of tags is pre-established by the linguist, who uses his/her competence to identify the different word classes. The very first experiments we made revealed how the traditional part-of-speech distinctions in Italian (generally based on morphological and semantic criteria) are often inadequate to represent the syntactic features of words in context. It is worth noting that the uncertainties in categorisation contained in Italian grammars and dictionaries reflect a growing difficulty as they move from fundamental linguistic classes, such as nouns and verbs, to more complex classes, such as adverbs, pronouns, prepositions and conjunctions. This latter class, that groups together elements traditionally used to express connections between sentences, appears inadequate when describing cohesive relations in Italian. This phenomenon actually seems to involve other elements traditionally assigned to different classes, such as adverbs, pronouns and interjections. Recent studies proposed the class of ‘connectives’, grouping all words that, apart from their traditional word class, have the function of connecting phrases and contributing to textual cohesion. From this point of view, conjunctions can be considered as part of phrasal connectives, that can in turn be included in the wider category of textual connectives. The aim of this study is to identify elements that can be included in the class of phrasal connectives, using quantitative methods. According to Shannon and Weaver’s (1949) observation that words are linked by dependent probabilities, corroborated by Halliday’s (1991) argument that the grammatical “system” (in Firth’s sense of the term) is essentially probabilistic, quantitative data are introduced in order to provide evidence of relative frequencies. Section 2 presents a description of word-class categorisation from the point of view of grammars and dictionaries arguing that the traditional category of conjunctions is inadequate for capturing the notion of phrasal connective. Section 3 examines the notion of ‘connective’ and suggests a truth-function interpretation of connective behaviour. Section 4 describes the quantitative methods proposed for analysing the distributional properties of lexical units, and section 5 comments on the results obtained by applying such methods drawing some provisional conclusions. (shrink)

Biofilms can be viewed as tissue‐like structures in which microorganisms are organized in a spatial and functional sophisticated manner. Biofilm formation requires the orchestration of a highly integrated network of regulatory proteins to establish cell differentiation and production of a complex extracellular matrix. Here, we discuss the role of the essential Bacillus subtilis biofilm activator RemA. Despite intense research on biofilms, RemA is a largely underappreciated regulatory protein. RemA forms donut‐shaped octamers with the potential to assemble into (...) dimeric superstructures. The presumed DNA‐binding mode suggests that RemA organizes its target DNA into nucleosome‐like structures, which are the basis for its role as transcriptional activator. We discuss how RemA affects gene expression in the context of biofilm formation, and its regulatory interplay with established components of the biofilm regulatory network, such as SinR, SinI, SlrR, and SlrA. We emphasize the additional role of RemA played in nitrogen metabolism and osmotic‐stress adjustment. (shrink)