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October 29th, 2013, 02:50 AM   #1
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Hi.
Could we have two equal elements in one group, or every two elements must be different?
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October 29th, 2013, 03:30 AM   #2
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Re: Group

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Originally Posted by limes5
Could we have two equal elements in one group
Considering a group is unnecessary here -- push it down to a set. No, as the definition of "set" goes, you can't have a certain set with essentially N distinct element but cardinality greater than N. That is, however, possible in a multiset though.
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