English

An informal introduction to topos theory

Category Theory 2011-06-29 v3 Algebraic Geometry Logic

Abstract

This short expository text is for readers who are confident in basic category theory but know little or nothing about toposes. It is based on some impromptu talks given to a small group of category theorists.

Cite

@article{arxiv.1012.5647,
  title  = {An informal introduction to topos theory},
  author = {Tom Leinster},
  journal= {arXiv preprint arXiv:1012.5647},
  year   = {2011}
}

Comments

27 pages. Version 3: expanded section on set theory; other minor edits

R2 v1 2026-06-21T17:04:34.519Z