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reversed_relation [2013/05/18 12:56] 127.0.0.1 external edit |
reversed_relation [2013/05/21 11:00] nikolaj |
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| ===== Reversed relation ===== | ===== Reversed relation ===== | ||
| ==== Definition ==== | ==== Definition ==== | ||
| - | | $ R $ | | + | | $ R\in\text{Rel}(X,Y) $ | |
| - | + | ||
| - | | $ \forall_R c\ \exists a,b\ (c=\langle a,b\rangle) $ | | + | |
| ^ $ \langle x,y \rangle \in R^\smile $ ^ | ^ $ \langle x,y \rangle \in R^\smile $ ^ | ||
| Line 16: | Line 14: | ||
| Set constructor | Set constructor | ||
| === Parents === | === Parents === | ||
| - | [[Ordered pair]] | + | [[Binary relation]] |
