Differences
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union [2014/04/03 22:43] nikolaj |
union [2014/04/06 19:11] nikolaj |
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| ===== Union ===== | ===== Union ===== | ||
| ==== Set ==== | ==== Set ==== | ||
| - | | @#55CCEE: context | @#55CCEE: $X,Y\in\mathfrak U$ | | + | | @#55CCEE: context | @#55CCEE: $X,Y$ ... small set | |
| | @#FFBB00: definiendum | @#FFBB00: $ x\in X \cup Y $ | | | @#FFBB00: definiendum | @#FFBB00: $ x\in X \cup Y $ | | ||
| | @#55EE55: postulate | @#55EE55: $ x\in X\lor x\in Y $ | | | @#55EE55: postulate | @#55EE55: $ x\in X\lor x\in Y $ | | ||
