Carlo Ierna

Carlo Ierna
Radboud University | RU · Research Institute for Philosophy, Theology and Religious Studies

PhD

About

42
Publications
1,315
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101
Citations
Introduction
I have a double training in philosophy and cognitive artificial intelligence, and I am interested in the interplay between philosophy, psychology, and mathematics in the 19th century, and the related theories of consciousness and mind, particularly symbolic intentionality and the idea of universal computation. Recent publications concerned the School of Brentano (Franz Brentano, Edmund Husserl, Christian von Ehrenfels, etc.), the development of Gestalt psychology, semiotics, the theory of manifolds (Mannigfaltigkeitslehre), and in a broader sense the idea of philosophy as science, the mathematical foundations of science, and the mechanization of the mind.
Additional affiliations
September 2019 - present
Leiden University
Position
  • Lecturer
March 2019 - present
Radboud University
Position
  • Researcher
October 2018 - present
Vrije Universiteit Amsterdam
Position
  • Lecturer
Education
October 2004 - May 2009
KU Leuven
Field of study
  • Philosophy
February 2003 - August 2008
Utrecht University
Field of study
  • Cognitive Artificial Intelligence
August 1998 - November 2002
Utrecht University
Field of study
  • Philosophy

Publications

Publications (42)
Article
Franz Brentano is not usually associated with mathematics. Generally, only Brentano’s discussion of the continuum and his critique of the mathematical accounts of it is treated in the literature. It is this detailed critique which suggests that Brentano had more than a superficial familiarity with mathematics. Indeed, considering the authors and wo...
Chapter
Edmund Husserl’s engagement with Bertrand Russell’s paradox stands in a continuum of reciprocal reception and discussions about impossible objects in the School of Brentano. Against this broader context, we will focus on Husserl’s discussion of Russell’s paradox in his manuscript A I 35α from 1912. This highly interesting and revealing manuscript h...
Chapter
In seiner Kosmogonie bespricht Ehrenfels den Ursprung, die Entwicklung, und das endgültige Schicksal des Universums: die Gestalt der Welt. Einerseits ist sie ein Kosmos, ein Geschöpf des Ordnungsprinzips, andererseits ein Chaos, als Resultat des Prinzips des Zufalls und der Entropie. Diese beiden komplementären kosmischen Prinzipien generieren die...
Chapter
A common analysis of Edmund Husserl’s early works on the philosophy of logic and mathematics presents these writings as the result of a combination of two distinct strands of influence: on the one hand a mathematical influence due to his teachers is Berlin, such as Karl Weierstrass, and on the other hand a philosophical influence due to his later s...
Chapter
In this article I connect two concepts that played central roles in the School of Meinong: the notion of impossible objects and that of Gestalt. Ehrenfels claims that Widerspruch or incompatibility would be a temporal Gestalt quality, specifically the trying and failing to build an intuitive presentation. Where, when, and how does this process brea...
Chapter
The chapter contains a brief intellectual biography of Herbert Spiegelberg, building on his numerous autobiographical remarks. It provides a survey of Spiegelberg’s early life and works and his German period, focusing more extensively on his American period. The chapter considers in some detail three important themes in Spiegelberg’s works. First,...
Chapter
The present article provides a critical analysis of Christian von Ehrenfels’ dissertation Über Grössenrelationen und Zahlen. Eine psychologische Studie. As many other students of Brentano, Ehrenfels engaged repeatedly with the philosophy of mathematics, but until now his dissertation remained nearly completely unknown. Ehrenfels’ dissertation, howe...
Chapter
Das vorliegende Kapitel setzt sich zum Ziel, die wichtigsten Einflüsse auf Edmund Husserls vor-transzendentale Philosophie darzustellen. Äußere Einflüsse spielen besonders in den Anfängen von Husserls Philosophie eine Rolle, in der späteren Weiterentwicklung der Phänomenologie zu einer transzendentalen Philosophie lassen sich diese nicht mehr so de...
Chapter
Like most of Franz Brentano's students, Carl Stumpf showed an interest in the philosophy of mathematics. In particular, Stumpf wrote his habilitation thesis On the Foundations of Mathematics, used mathematical examples in central parts of his lectures, and later returned to the topic in the posthumously published Erkenntnislehre. I will try to show...
Article
Among the correspondence between Husserl and Brentano kept at the Houghton Library of Harvard University there is a letter from Husserl to Brentano from 29 XII 1889, whose contents were completely unknown until now. The letter is of some significance, both historically as well as systematically for Husserl’s early development, painting a vivid pict...
Article
In this article the author discusses F. Brentano's theory of intentionality and the ontological status of the intentional object specifically with respect to symbolic presentations. The role and function of intentionality are compared to the process of semeiosis. Several interesting parallels can be found between fundamental problems in the interpr...
Article
The concept of a Mannigfaltigkeit in Husserl has been given various interpretations, due to its shifting role in his works. Many authors have been misled by this term, placing it in the context of Husserl’s early period in Halle, while writing the Philosophy of Arithmetic, as a friend and colleague of Georg Cantor.Yet at the time, Husserl distanced...
Article
The article introduces and discusses an unpublished manuscript by Edmund Husserl, conserved at the Husserl-Archives Leuven with signature K I 26, pp. 73a–73b. The article is followed by the text of the manuscript in German and in an English translation. The manuscript, titled “The Transition through the Impossible” (Der Durchgang durch das Unmöglic...
Book
This volume brings together essays by leading phenomenologists and Husserl scholars in which they engage with the legacy of Edmund Husserl’s philosophy. It is a broad anthology addressing many major topics in phenomenology and philosophy in general, including articles on phenomenological method; investigations in anthropology, ethics, and theology;...
Article
Full-text available
In the second edition of the Logische Untersuchungen Husserl claims to have investigated higher order objects and Gestalt qualities before anyone else in the School of Brentano. Indeed, in the Philosophie der Arithmetik we find a discussion of figural moments and fusion that could lend some support to such a claim. By considering the concepts of Ge...
Chapter
In this paper I will discuss Edmund Husserl’s critique of Franz Brentano’s interpretation of categorical judgments as Double Judgments (Doppelurteile). This will be developed mostly as an internal critique, within the framework of the school of Brentano, and not through a direct contrast with Husserl’s own theory of judgment, as presented e.g. in t...
Article
What the present work aimed to achieve is an assessment of the origin and unity of Husserl’s Logical Investigations. My approach was to take the history of its development as fundamental for the determination of its basic structure. Therefore, I proceeded to analyse Husserl’s development between the Philosophy of Arithmetic and Logical Investigatio...