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Tour:Index of a subgroup

226 bytes added, 16:18, 1 July 2008
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{{quotation|'''WHAT YOU NEED TO DO''':
* Read the two equivalent definitions of index (as number of left cosets, and number of right cosets)
* Peruse through the rest Convince yourself of why the page's contenttwo definitions are equivalent.}}{{#lst:Index of a subgroup|mainbeginner}}{{quotation|'''WHAT'S MORE''': Some further facts about index of a subgroup, some of which you'll see soon in the tour, and others, that'll be seen much later. Ignore those that use unfamiliar terminology.}}
{{guided tour-bottom|beginners|Introduction three|Lagrange's theorem|Left and right coset spaces are naturally isomorphic}}
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