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arXiv · 2208.10835

The Role of the Fifth Postulate in the Euclidean Construction of Parallels

Iosif Petrakis
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Abstract

We ascribe to the Euclidean Fifth Postulate a genuine constructive role, which makes it absolutely necessary in the parallel construction. For that, we present a reconstruction of the general principles underlying the Euclidean construction of a geometric property. As a consequence, the epistemological role of Euclidean constructions is revealed. We also examine some first implications of our interpretation to the relation between Euclidean and non-Euclidean geometries. The Bolyai construction of limiting parallels is also discussed from the Euclidean point of view, as this is reconstructed here.

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Iosif Petrakis. 2022-08-23. The Role of the Fifth Postulate in the Euclidean Construction of Parallels. https://arxiv.org/abs/2208.10835

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