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Questions tagged [eta-equality]

Things related to η-convertibility, η-expansion, η-reduction, and their use in simplifying proofs.

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In what intensional type theories can absurdity be made definitionally proof irrelevant?

Various type theories have, over the years, explored extending the definitional equality with a variety of eta-laws and various forms of proof irrelevance. Quite a lot of systems manage eta for ...
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