Homotopy Type Theory setoid > history (Rev #1)

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Definition

A setoid is a preordered type (T,)(T, \equiv) with a term

s: a:A b:A(ab)(ba)s: \prod_{a:A} \prod_{b:A} (a \equiv b) \to (b \equiv a)

The preorder \equiv is called an equivalence relation.

See also

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