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Is it possible to generate a collision free hash function from an equality function?

Question 1: Can I write a function $f$ with the type $\forall\alpha,\;(\alpha\to\alpha\to\mathbb{B})\to(\alpha\to t)$ such that $f\;e$ is an injection for all equivalence relations $e$? The …
Radu GRIGore's user avatar
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