Talk:Index of a subgroup

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 Field:  Algebra


Is the informal definition in the introduction helpful? Why not just start with the number of cosets? Would it be better to say cardinality? Quotient group (talk) 20:55, 14 October 2009 (UTC)

Informal definitions are usually useful to somebody. Charles Matthews (talk) 15:00, 16 October 2009 (UTC)
OK, but I've moved the formal definition up a bit. Quotient group (talk) 19:27, 18 October 2009 (UTC)