scratch
§
Allegories and Categories
created 2022-09-28
An allegory is a category enriched over posets, where each morphism
r
:
A
→
B
r: A \to B
r
:
A
→
B
has a converse
r
′
:
B
→
A
r': B \to A
r
′
:
B
→
A
.
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