Idempotents and the points of the topos of M-sets

Ilia Pirashvili

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arXiv · 2011.11747

Idempotents and the points of the topos of M-sets

Ilia Pirashvili

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Abstract

The aim of this paper is to study the points and localising subcategories of the topos of $M$-sets, for a finite monoid $M$. We show that the points of this topos can be fully classified using the idempotents of $M$. We introduce a topology on the iso-classes of these points, which differs from the classical topology introduced in SGA4. Likewise, the localised subcategories of the topos $M$-sets correspond to the set of all two-sided idempotent Ideals of $M$.

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BibTeX RIS

Ilia Pirashvili. 2020-11-23. Idempotents and the points of the topos of M-sets. https://arxiv.org/abs/2011.11747

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