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relation_domain [2014/03/21 11:11]
127.0.0.1 external edit
relation_domain [2014/07/11 20:38] (current)
nikolaj
Line 1: Line 1:
 ===== Relation domain ===== ===== Relation domain =====
 ==== Set ==== ==== Set ====
-Let 
 | @#55CCEE: context ​    | @#55CCEE: $ R $ | | @#55CCEE: context ​    | @#55CCEE: $ R $ |
-be a set with 
 | $ c\in R $ | | $ c\in R $ |
 | @#55EE55: postulate ​  | @#55EE55: $ \forall c.\ \exists a,b.\ c=\langle a,b\rangle $ | | @#55EE55: postulate ​  | @#55EE55: $ \forall c.\ \exists a,b.\ c=\langle a,b\rangle $ |
-Then 
 | @#FFBB00: definiendum | @#FFBB00: $ x\in \mathrm{dom}(R) $ | | @#FFBB00: definiendum | @#FFBB00: $ x\in \mathrm{dom}(R) $ |
-if 
 | @#55EE55: postulate ​  | @#55EE55: $ \exists y.\ \langle x,y \rangle\in R $ | | @#55EE55: postulate ​  | @#55EE55: $ \exists y.\ \langle x,y \rangle\in R $ |
  
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