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reversed_relation [2013/05/15 23:51] 127.0.0.1 external edit |
reversed_relation [2013/05/18 12:56] 127.0.0.1 external edit |
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===== Reversed relation ===== | ===== Reversed relation ===== | ||
==== Definition ==== | ==== Definition ==== | ||
- | | $ R,x,y $ | | + | | $ R $ | |
- | | $ \text{relation-like}(R) $ | | + | | $ \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 $ ^ | ||
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==== Ramifications ==== | ==== Ramifications ==== | ||
+ | === Reference === | ||
+ | Mizar files: [[http://markun.cs.shinshu-u.ac.jp/mirror/mizar/JFM/Vol1/relat_1.html|RELAT_1]] | ||
+ | |||
==== Context ==== | ==== Context ==== | ||
Set constructor | Set constructor | ||
- | === Follows === | + | === Parents === |
[[Ordered pair]] | [[Ordered pair]] | ||
- | ==== Discussion ==== | ||
- | === Reference === | ||
- | Mizar files: | ||
- | |||
- | [[http://markun.cs.shinshu-u.ac.jp/mirror/mizar/JFM/Vol1/relat_1.html|RELAT_1]] | ||
- |