| Who Cites inv funs? |
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inv_funs | Def InvFuns(A; B; f; g) == g o f = Id & f o g = Id |
| | Thm* A,B:Type, f:(AB), g:(BA). InvFuns(A; B; f; g) Prop |
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tidentity | Def Id == Id |
| | Thm* A:Type. Id AA |
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compose | Def (f o g)(x) == f(g(x)) |
| | Thm* A,B,C:Type, f:(BC), g:(AB). f o g AC |
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identity | Def Id(x) == x |
| | Thm* A:Type. Id AA |