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![[parent]](http://images.planetmath.org:8080/images/uparrow.png) Viewing Message
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| ``Closed binary operation''
by ratboy on 2004-06-04 12:13:46 |
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| The remark about closure seems redundant. How could a set G fail to be closed under a binary operation on G? If, on the other hand, the intent is to define the relevant notion of closure, there ought to be some mention of the situation where it matters: a subset C of G is a subgroupoid of G if the restriction of the operation to CxC is a binary operation on C.
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