The Reasoner

Current Issue

Vol. 20 No. 2 (2026)
Published 17 August 2026

The Reasoner is a quarterly focussing on reasoning, inference and method broadly construed.

Editorial

Hykel Hosni
Editorial
https://doi.org/10.54103/1757-0522/32621
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Research articles

Kenneth Aizawa
A Material Theory of Abduction
https://doi.org/10.54103/1757-0522/31749
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Teaching corner

Zuzanna Rygiewicz
Gentzen systems and Beth tableaux: A Comparative Analysis of Syntactic and Semantic Proof Methods
https://doi.org/10.54103/1757-0522/31262
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The Reasoner Speculates

Bimal Jain
The Decisive Influence of the Diagnostic Environment on Diagnostic Reasoning in Practice
https://doi.org/10.54103/1757-0522/29654
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Post-publication reviews and comments

John Ian Boongaling
On Blum’s Argument for the Soundness of the S5 Axiom
https://doi.org/10.54103/1757-0522/31266
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