Logic as an integral aspect of philosophy proper: a case study of Thomas Hobbes

Ertan, Şebnem
This thesis addresses itself to the following questions: 1) What is the relationship between logic and philosophy? 2) How do logic and philosophy affect each other? To find the answers to both questions, it offers a methodological-cum-historical case study of Thomas Hobbes. Concerning the first question, the relationship between logic and philosophy has been discussed since Aristotle, for whom the former is an organon to the latter. Logic does not have an existence independent of philosophy. As for the second question, if it is an organon, then logic offers philosophy viable and valid forms of reasoning. As a result, other questions appear about the idea of progress in logic; for example, if there is progress in logic, what is its nature and how can we capture it? Hobbes’s philosophical system as a whole is a rich ground to study these questions. He defines logic as identical with philosophy and presents a philosophical system so we can see their relationship and understand how we can capture logical progress by looking at the progress in philosophy.


An attempt to make a definition of existence and constructing a foundation for an axiomatic system of ontology
Çağatay, Hasan; Grünberg, Teo; Department of Philosophy (2007)
This thesis aims to make an analysis of the concepts of ‘existence’. It also constructs four new definitions based on the concept of ‘effect’ for different concepts of beings. By reasoning based on these definitions and some pre-suppositions, a foundation for an axiomatic system of ontology is tried to construct.
Stable controller design for T-S fuzzy systems based on Lie algebras
Banks, SP; Gurkan, E; Erkmen, İsmet (Elsevier BV, 2005-12-01)
In this paper, we study the stability of fuzzy control systems of Takagi-Sugeno-(T-S) type based on the classical theory of Lie algebras. T-S fuzzy systems are used to model nonlinear systems as a set of rules with consequents of the type x(t) = A(l)x (t) + B(l)u (t). We conduct the stability analysis of such T-S fuzzy models using the Lie algebra LA generated by the A(l) matrices of these subsystems for each rule in the rule base. We first develop our approach of stability analysis for a commuting algebra ...
Antinomies and the problem of ontology in Hegel’s Science of logic
Cengiz, Övünç; Çırakman, Elif; Department of Philosophy (2014)
This thesis discusses the problem of the possibility of a post-Kantian ontology. The thesis argues that Kant denies the validity of the knowledge claims of classical ontology, and argues that our knowledge claims must be limited with the daily objects of our sensation. After having discussed that the limitation brought by Kant mainly stems from the Antinomies, the thesis further argues that a post-Kantian ontology must face the reasons Kant has pointed out for the limitation of thought. Finally, the possibi...
Irony as a philosophical attitude in socrates
Korkut, Hacer; İnam, Ahmet; Department of Philosophy (2007)
This thesis analyzes the reasons for Socrates' being presented as a paradoxical figure in the early dialogues of Plato. Irony as a fundamental philosophical attitude in Socratic philosophy is discussed with reference to some of the major philosophers of the history of philosophy. The thesis also suggests the possibility of seeing philosophy as an ironic activity and it traces the etymology of the concept of irony in terms of its philosophical importance.
A Critical inquiry into the demarcation of logical constants
Beygu, Tankut; Grünberg, Teo; Department of Philosophy (2013)
The dissertation aims to set out a methodological framework conducive to further research into the demarcation problem of logical constants through a critical examination of the principal proposals for the problem. Logical constants should be characterised so as the essential values of logic, i.e., necessity, normativity and formality, are secured. Formality is central to the proposed framework in consideration of its relation to validity; necessity and normativity are established with reference to formalit...
Citation Formats
Ş. Ertan, “Logic as an integral aspect of philosophy proper: a case study of Thomas Hobbes,” M.A. - Master of Arts, Middle East Technical University, 2022.