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Timeline for equivalence of submodules

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Feb 12, 2010 at 23:35 comment added AndrewLMarshall I understand completely. This little speed bump came up as I'm trying to classify a certain set of symplectic toric orbifolds by looking at primitive vectors at vertices of the moment polytope in Z^3. Of course, none of that's relevant to solving this bit here, but I see why stating the context makes it more legitimate.
Feb 12, 2010 at 16:39 comment added Kim Morrison @mathuni, oh, probably just ignore me, I was being grumpy, sorry. I guess the better advice is: when you're asking a question that could be mistaken as homework, provide a little more context, background or motivation, just so we can all recognize the question immediately as legitimate use of the site. Many people here feel that "homework questions" are abuse of the site, and react poorly. I shouldn't have in this case, but did.
Feb 12, 2010 at 12:11 comment added AndrewLMarshall This answer was very helpful, particularly pointing me to Smith normal form. Should I be explaining how this isn't homework? Or disguising my question in a form that's more general?
Feb 12, 2010 at 5:13 comment added Kim Morrison Just a comment, Mariano -- it's much awesomer, when we get questions that are "too localized" like this, if you give an extremely general answer, than if you, ahem, "do someone's homework".
Feb 12, 2010 at 3:06 vote accept AndrewLMarshall
Feb 12, 2010 at 1:50 history edited Mariano Suárez-Álvarez CC BY-SA 2.5
added 154 characters in body
Feb 12, 2010 at 1:36 vote accept AndrewLMarshall
Feb 12, 2010 at 1:36
Feb 12, 2010 at 0:06 history edited Mariano Suárez-Álvarez CC BY-SA 2.5
added 203 characters in body; added 106 characters in body
Feb 11, 2010 at 23:56 history answered Mariano Suárez-Álvarez CC BY-SA 2.5