My paper, Aztec Diamonds and Baxter Permutations can now be found at arXiv:math.CO/0309135.
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My paper, Aztec Diamonds and Baxter Permutations can now be found at arXiv:math.CO/0309135.
Hal Canary |
Mathematics |
2003-09-07 17:40:34 EDT
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This fall I’ll probably be taking math 741 (Abstract Algebra - finite groups and noncommutative rings) and 744 (Algebraic Graph Theory). These classes will kick my ass.
Hal Canary |
Mathematics |
2003-08-12 13:04:08 EDT
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Learned a new sequence today: 1, 0, 0, 2, 10, 4, 40, 92, 352, 724, 2680, 14200, 73712, 365596, 2279184, 14772512, 95815104, 666090624, 4968057848, 39029188884, 314666222712, 2691008701644, 24233937684440… There doesn’t seem to be a closed form solution to this one.
Hal Canary |
Mathematics |
2003-08-03 21:55:51 EDT
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Worked most of the night on algebra. Took exam this morning. I think I got three out of four problems right. Am happy with that.
I need to work harder in this class. I think it’s important. Abe suggests I check out this book.
Hal Canary |
Mathematics |
2003-03-13 17:06:51 EST
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You can define a natural isomorphism from HomR(R(Λ1), R(Λ2)) to (R(Λ2))Λ1. (Where HomR(R(Λ1), R(Λ2)) is the R-linear homomorphisms from R(Λ1) to R(Λ2).)
HomR(R(Λ1), R(Λ2)) —> R(Λ2) , Λ1
If f is an element of HomR(R(Λ1), R(Λ2)) then that map sends f to [f], a (Λ2) , Λ1 matrix.
Isn’t that the most beautiful thing you’ve ever seen?
Hal Canary |
Mathematics |
2003-03-11 12:18:01 EST
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