Define null-homotopic maps #1136
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…-homotopies is a proposition
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I'm briefly marking this PR as a draft to add a computation. |
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We can also consider calling null-homotopic maps "constant" and then refer to constant maps as "standard constant maps". |
fredrik-bakke
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Jun 17, 2024
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I unabstracted the is-equiv proofs in this file as everything holds by refl, thus everything computes very nicely.
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Defines null-homotopic maps and characterizes their equality. In particular, a sufficient condition for when being null-homotopic is a property is given.