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F. C.'s user avatar
F. C.'s user avatar
F. C.'s user avatar
F. C.
  • Member for 14 years, 1 month
  • Last seen this week
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Who was H. Vogt?
Did you look at ZBmath : zbmath.org/authors/?q=Vogt ?
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Elements of the Hall basis described via permutations
You may like to read Salvatore and Tauraso article : arxiv.org/pdf/0802.3010.pdf
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revised
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revised
Can $E_8$ be enlarged?
fix typo in Coxeter name
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revised
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"Oddity" in counting intervals of the Tamari lattice
There is a natural involution on Tamari intervals, namely reversal and exchange of bounds, with fixed points counted by 1, 1, 3, 4, 15, 22, 91, 140, 612, 969, 4389, 7084, 32890, 53820, ... One expects an instance of the q=-1 phenomenon for these numbers.
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"Oddity" in counting intervals of the Tamari lattice
More generally, odd values seem to appear for indices in oeis.org/A263133 .
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Did André Bloch or any other mathematician receive the Becquerel Prize?
According to wikipedia, Henri Becquerel (with i and not y) is the son of Alexandre Edmond Becquerel. So this is not the same prize.
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Do Bernoulli polynomials know about face vectors?
Maybe p=3 and p=23 would also be interesting to consider ?
revised
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Do Bernoulli polynomials know about face vectors?
And the odd Bernoulli numbers vanish, so one can remove them from the formula.
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A family of posets
Now in the encyclopedia as oeis.org/A301871
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Antiderivative of totally real polynomials
You need distinct real roots, no ?
revised
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A determinant identity
Maybe this is the Desnanot-Jacobi identity ? I think I have read this in Zelevinsky.
awarded
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Maximal number of visible vertices
Oh, I see that I had somehow missed the point. But then one can truncate the top vertex and iterates this kind of truncation, adding each time 2 vertices and one face.
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