b-mehta/topos

Topos theory in lean

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8 open issues indexed

Generalise `limit.lift_self_id` etc to cones. Open

good first issue

b-mehta/topos#7 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Write a tactic `rewrite_assoc` that performs rewriting mod associativity of composition. Open

b-mehta/topos#9 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
move comma.lean and pullback.lean to mathlib Open

light

b-mehta/topos#10 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Johnstone's exercise Open

b-mehta/topos#13 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
reflexive coequalizers Open

light

b-mehta/topos#20 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve epi-mono factorisation Open

b-mehta/topos#28 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Kleisli categories Open

b-mehta/topos#32 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Automatic upgrade has failed Open

b-mehta/topos#38 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

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