aristotelian sciences
The subject of the Posterior Analytics is epistêmê. This is one of several Greek words that can reasonably be translated “knowledge”, but Aristotle is concerned only with knowledge of a […]
Tag Archives: deduction
demonstrations and demonstrative sciences
A demonstration (apodeixis) is “a deduction that produces knowledge”. Aristotle’s Posterior Analytics contains his account of demonstrations and their role in knowledge. From a modern perspective, we might think that […]
Metatheoretical Results
Having established which deductions in the figures are possible, Aristotle draws a number of metatheoretical conclusions, including: – No deduction has two negative premises – No deduction has two particular […]
The Deductions in the Figures (“Moods”)
The Deductions in the Figures (“Moods”) see also: http://eidetisch.tumblr.com/post/45789462673/the-figures In Prior Analytics I.4-6, Aristotle shows that the premise combinations given in the following table yield deductions and that all other […]
Methods of Proof: “Perfect” Deductions, Conversion, Reduction
Methods of Proof: “Perfect” Deductions, Conversion, Reduction Aristotle’s proofs can be divided into two categories, based on a distinction he makes between “perfect” or “complete” (teleios) deductions and “imperfect” or […]
The Figures
The Figures see also: http://eidetisch.tumblr.com/post/45801450925/the-deductions-in-the-figures-moods | First Figure | Second Figure | Third Figure | | Predicate Subject | Predicate Subject | Predicate Subject | | Premise | a b […]
Aristotelian Deductions and Modern Valid Arguments
Aristotelian Deductions and Modern Valid Arguments Despite its wide generality, Aristotle’s definition of deduction is not a precise match for a modern definition of validity. Some of the differences may […]
Induction and Deduction
Induction and Deduction Deductions are one of two species of argument recognized by Aristotle. The other species is induction (epagôgê). He has far less to say about this than deduction, […]
The Subject of Logic: “Syllogisms”
The Subject of Logic: “Syllogisms” All Aristotle’s logic revolves around one notion: the deduction (sullogismos). A thorough explanation of what a deduction is, and what they are composed of, will […]
THOMAS HOBBES (1588-1679)
Hobbes studied the scholastic philosophy at Oxford and was eight years older than Descartes. Hobbes went to Paris many times, got acquainted with Gassendi and Mersenne and Descartes. Hobbes was […]
