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Timeline for Configuration number

Current License: CC BY-SA 3.0

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Sep 30, 2011 at 18:41 comment added Igor Rivin You are incorrect. The matrices do NOT need to be square, however the bounds on the number of 1s are the same vertically and horizontally. See The edit for a more modern/general result.
Sep 30, 2011 at 18:39 history edited Igor Rivin CC BY-SA 3.0
added barvinok ref.
Sep 30, 2011 at 17:08 comment added Emile Maras It's not far... but in that case they have a square board whereas mine is not. And the formulae they give is valid when R = C is very large. In my case, C is very large, but R is small (less than 20)...
Sep 30, 2011 at 10:15 history answered Igor Rivin CC BY-SA 3.0