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comment

Thank you. What if at least one of the rings is not a field?

Mar 4, 2011 at 0:33

revised

deleted 1 characters in body

Mar 4, 2011 at 0:29

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revised

added 61 characters in body; deleted 33 characters in body

Mar 4, 2011 at 0:13

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revised

example added; added 2 characters in body

Mar 4, 2011 at 0:07

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awarded

Editor

Mar 3, 2011 at 23:20

revised

deleted 367 characters in body; edited title; added 20 characters in body; edited title; added 128 characters in body

Mar 3, 2011 at 23:14

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asked

Mar 3, 2011 at 23:00

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