What do indexed mean in 'indexed family' in set theory?

Asked Dec 02 '13 at 12:15

Active Dec 02 '13 at 13:25

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Thanks! :)

edited Dec 02 '13 at 13:25

asked Dec 02 '13 at 12:15

ZFK LOCA

Please edit your question so it doesn't use about a million levels of nested blockquotes. – mrf Dec 02 '13 at 12:19
See also http://math.stackexchange.com/questions/35462/what-is-the-difference-between-family-and-set. – lhf Dec 02 '13 at 12:27
Indeed, the accepted answer to the question referenced by @lhf above is the right answer. – Harald Hanche-Olsen Dec 02 '13 at 12:38
But then what is index set – ZFK LOCA Dec 02 '13 at 13:02
The index set can be any set. When you view the indexed family as a function, the index set is the domain of the function. – Harald Hanche-Olsen Dec 02 '13 at 13:26
goodbye! :) :) :) – ZFK LOCA Dec 02 '13 at 13:26

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