| Who Cites is one one corr rel? |
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is_one_one_corr_rel | Def 1-1-Corr x:A,y:B. R(x;y) == (x:A. !y:B. R(x;y)) & (y:B. !x:A. R(x;y)) |
| | Thm* A,B:Type, R:(ABProp). (1-1-Corr x:A,y:B. R(x;y)) Prop |
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exists_unique | Def !x:A. P(x) == x:A. x is the x:A. P(x) |
| | Thm* A:Type, P:(AProp). (!x:A. P(x)) Prop |
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is_the | Def x is the u:A. P(u) == P(x) & (u:A. P(u) u = x) |
| | Thm* A:Type, P:(AProp), x:A. (x is the x:A. P(x)) Prop |