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Questions
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sums of rational squares

mar 1 12 at 21:30 Leonardo 191●2●3

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does the j-invariant satisfy a rational differential equation?

sep 12 11 at 17:35 Alison Miller 1,884●10●16

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dependence of eigenvalues on parameters

feb 15 11 at 17:31 Piero D'Ancona 3,657●1●6●18

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430
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c^2 = a^2 + b^2 + ab and its solutions

may 18 12 at 18:37 Michael Stoll 1,025●2●9

 
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eigenvalues of a Mobius strip

feb 28 11 at 15:56 David Speyer 55.4k●3●102●237

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finding isothermal coordinates uniformly

mar 15 11 at 17:42 Anton Petrunin 16.5k●41●110

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Solutions of the “tiling equation” $N = 2K^2 - M^2$

jan 25 12 at 23:17 Will Jagy 12.5k●1●26●45

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limit cycles of dynamical systems

nov 23 11 at 1:39 Vaughn Climenhaga 3,941●1●8●25

 
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computing Bernoulli numbers

may 16 at 17:39 Carlo Beenakker 5,821●10●20