Publication Details

Abstract

The paper deals with problems of existence claims, as one sort of principles, and with their function in demonstrative science. The author tries to outline a resolution of the relation between existence and necessity - by means of seeing the necessity as a definitional connection expressing an essence. An analysis of some selected passages from AnPost П.1-2 should explain the questions concerning the demonstrations of existence. The concluding part is dedicated to some historical aspects resulting from the comparison of Aristotle's theory of science with the Euclidean and pre-Euclidean geometry, concerning the existence claims.