297d50378d
define embedding, (split) surjection, retraction, existential quantifier, 'or' connective also add a whole bunch of theorems about these definitions still has two sorry's which can be solved after #564 is closed |
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algebra | ||
cubical | ||
hit | ||
init | ||
types | ||
.gitignore | ||
.project | ||
arity.hlean | ||
core.hlean | ||
hott.md |