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Homotopy Type Theory
antitonic function > history (Rev #2)

# Contents

## Definition

Let $A$ and $B$ be preorders. An **antitonic function** is a function $f : A \to B$ with a family of dependent terms

$\phi(a,b):(a \leq b) \to (f(b) \leq f(a))$

showing that the preorder is reversed by $f$.

## See also

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