Vicfred
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 Jan 25 comment Recommended Algebra Books to read? @GregoryGrant it mentions them... I don't think someone studying linear algebra for the first time needs more than that, most books at that level don't even mention them Jan 25 comment Recommended Algebra Books to read? all except from the pagerank algorithm (google invented that right? maybe you can find a good explanation of it online) Jan 25 comment Recommended Algebra Books to read? Hoffman, Kunze. Linear algebra Nov 13 revised $\int e^{-x^2}dx$ deleted 5 characters in body Sep 24 awarded Popular Question Sep 16 awarded Yearling Aug 25 awarded Notable Question Apr 22 awarded Citizen Patrol Apr 13 comment Determine if a rectagle is fully “compatible” with a given Polyomino code.google.com/codejam/contests.html scroll down, there's analysis for every major past contest Apr 13 comment Determine if a rectagle is fully “compatible” with a given Polyomino They provided analysis of past contests' (as you can see on the page), I don't see why they wouldn't provide it this year. Apr 13 comment Determine if a rectagle is fully “compatible” with a given Polyomino this was problem D of the last google code jam, I guess they will post an analysis of the solution Feb 27 comment Elementary algebraic question about finite-fields. Since you can have polynomials of every degree F[x] must be infinite and F^n is finite so F[x] can't be a subset of F^n. Nov 22 awarded Popular Question Sep 16 awarded Yearling Jul 2 awarded Curious May 3 awarded Favorite Question Feb 19 awarded Good Answer Feb 14 comment How many positive integers $< 1{,}000{,}000$ contain the digit $2$? @WinMc yeah, I take part in codeforces and topcoder that's why I'm trying to improve my dynamic programming skills with problems like this so I'm looking where can I learn. Feb 14 comment How many positive integers $< 1{,}000{,}000$ contain the digit $2$? can you give me one reference where I can learn this kind of things? (counting+recurrences) Feb 4 awarded Notable Question