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 wu :: forums    riddles    putnam exam (pure math) (Moderators: Grimbal, Icarus, SMQ, william wu, Eigenray, towr)
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 Subject Started by Replies Views Last post An inequality acarchau 2 1065 Dec 15th, 2008, 3:30amby ThudnBlunder Sum of integers whose reciprocals sum to 1 Michael Dagg 4 7116 Dec 10th, 2008, 12:50amby towr Number of skew polyominos howard roark 9 5001 Dec 10th, 2008, 12:34amby towr A Beastly Number ThudnBlunder 14 1809 Dec 9th, 2008, 5:32pmby Eigenray tough number theory prob. « Pages 1 2 » LeoYard 26 2991 Nov 7th, 2008, 12:23pmby Michael Dagg help with a putnam question sarah9 2 4222 Nov 6th, 2008, 2:02pmby Eigenray Cubic Diophantine Equation Barukh 9 1484 Nov 4th, 2008, 11:11pmby Eigenray Dice sum divisibility Eigenray 6 2976 Oct 17th, 2008, 9:46amby william wu Proving Primality like Euler Barukh 5 1198 Sep 27th, 2008, 1:35amby Eigenray Can one connected set pass through another? ecoist 8 1075 Sep 26th, 2008, 3:13pmby Hippo Number problem « Pages 1 2 » NightBreeze 26 2652 Sep 25th, 2008, 1:56pmby NightBreeze for prime >3, sum_k=1^(p-1) 1 over k =0 mod p^2 4butipul2maro 2 1037 Sep 18th, 2008, 2:33pmby Eigenray Complete set wonderful 2 1206 Sep 16th, 2008, 4:09pmby wonderful (tanA)(tanB)(tanC) ThudnBlunder 4 10017 Aug 30th, 2008, 6:05amby l4z3r Integral Solutions l4z3r 6 1369 Aug 30th, 2008, 5:34amby l4z3r Limit of Integral ThudnBlunder 2 749 Aug 7th, 2008, 10:04amby Eigenray Limit of a Combinatorial Sum Michael Dagg 2 786 Aug 2nd, 2008, 8:38pmby Michael Dagg Inequality ThudnBlunder 2 683 Jul 13th, 2008, 3:02pmby Eigenray Cubic Congruences ThudnBlunder 3 704 Jul 12th, 2008, 2:37pmby Eigenray Interesting inequality wonderful 12 1226 Jul 4th, 2008, 2:26pmby wonderful Odd integration problem NightBreeze 2 810 Jun 24th, 2008, 10:03amby NightBreeze Prime power moments Aryabhatta 10 1018 Jun 20th, 2008, 2:38pmby Obob Barely compatible gatherings ecoist 4 1039 Jun 9th, 2008, 2:50pmby ecoist Proving Stokes' Theorem Marissa 3 4301 May 5th, 2008, 6:37pmby Eigenray SIGMAarctan(2/n^2) ThudnBlunder 7 1640 May 21st, 2008, 3:59amby william wu Sinc(x) ThudnBlunder 3 4640 May 20th, 2008, 1:44pmby william wu Common Eigenvector Condition william wu 9 5337 May 19th, 2008, 1:08pmby william wu Summation ThudnBlunder 10 1590 May 11th, 2008, 10:04amby towr matrix temporary 24 1914 Apr 24th, 2008, 7:42pmby Michael Dagg Help with an Arithmetic/algebra equation game uzo 2 3402 Apr 6th, 2008, 7:18amby towr
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