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Commit 2020-12-12 07:16 84f99388

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feat(category_theory/sites): sheaves on types (#5259)

Estimated changes

Modified src/category_theory/sites/sheaf.lean

added theorem category_theory.presieve.is_sheaf.is_sheaf_for

Created src/category_theory/sites/types.lean

added def category_theory.discrete_presieve

added def category_theory.discrete_sieve

added theorem category_theory.discrete_sieve_mem

added def category_theory.eval

added theorem category_theory.eval_app

added theorem category_theory.eval_map

added theorem category_theory.eval_types_glue

added theorem category_theory.generate_discrete_presieve_mem

added theorem category_theory.is_sheaf_yoneda'

added theorem category_theory.subcanonical_types_grothendieck_topology

added theorem category_theory.types_glue_eval

added def category_theory.types_grothendieck_topology

added theorem category_theory.types_grothendieck_topology_eq_canonical

added def category_theory.yoneda'

added theorem category_theory.yoneda'_comp