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unit_element [2015/04/12 16:05] nikolaj created |
unit_element [2015/04/12 17:48] nikolaj |
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| ===== Unit element ===== | ===== Unit element ===== | ||
| ==== Set ==== | ==== Set ==== | ||
| - | | @#55CCEE: context | @#55CCEE: $\langle M,* \rangle \in$ magma | | + | | @#55CCEE: context | @#55CCEE: $\langle M,* \rangle$ ... magma | |
| | @#FFBB00: definiendum | @#FFBB00: $e \in$ it | | | @#FFBB00: definiendum | @#FFBB00: $e \in$ it | | ||
| - | | @#55EE55: postulate | @#55EE55: $(a*b)*c=a*(b*c)$ | | + | | @#55EE55: postulate | @#55EE55: $e*a=a*e=e$ | |
| - | | @#FFFDDD: exists | @#FFFDDD: $e\in M$ | | + | |
| ----- | ----- | ||
