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Theorem category_theory.pullback_singleton

Modification history

2021-04-30 14:55
src/category_theory/sites/pretopology.lean
feat(category_theory/sites): construct a presieve from an indexed family of arrows (#7413) …
Deleted category_theory.pullback_singletonView on Github →
2020-10-27 17:20
src/category_theory/sites/pretopology.lean
feat(category_theory/sites): pretopology (#4648) …
Added category_theory.pullback_singletonView on Github →