What Absurdity Is Not in Natural Deduction: Structural Approach and the Empty Set.

In this paper, I argue that on a structural view of absurdity within natural deduction frameworks for both classical and intuitionistic logic, absurdity cannot be identified with the empty set; that is, with something that contains nothing. Instead, absurdity should be seen as representing nothing;...

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Bibliographic Details

Published in:	Topoi: An International Review of Philosophy Vol. 45; no. 2; pp. 627 - 642
Main Author:	Pezlar, Ivo
Format:	Article
Published:	Springer Nature May2026
Subjects:	Contradiction Proposition (Logic) Nonclassical mathematical logic Intuitionistic mathematics Mathematical logic Logic
Online Access:	View this record in EBSCOhost