[ refactor ] add Relation.Unary.Unique#3067
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jamesmckinna wants to merge 4 commits into
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gallais
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Jul 10, 2026
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Fixes #436 wrt (some) refactoring. TODO: (from the original issue)
properties:
∃! Pimplies∃! Qgiven thatP <=> Qrefactor:
∃!defined over aSetoidrather than a set + a binary relation?UPDATED not sure about this, but suppose it could be tackled downstream (with a
Propositionalvariant, naturally)?Unique x P = ∀ {y} → B y → x ≈ ytoRelation.Unary?∃!