Let L be a finite-dimensional Lie algebra over a field k of characteristic zero, and U(L) its universal enveloping algebra. We show that the semicenter of U(L) is a UFD. More generally, the same ...
Math Riddles are so challenging, but that makes them worthwhile to solve. Math riddles are logical problems that require strong analytical abilities, high IQ, knowledge of math concepts, and good ...
The equation n! = 6! × 7! relates three factorials. How large is n?
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