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1d
answered Generalization of Popoviciu's inequality
Jun
7
awarded  Nice Question
Jun
5
asked q-Catalan numbers from Grassmannians
May
28
revised One identity in Lie algebras
added 30 characters in body
May
28
answered One identity in Lie algebras
May
28
answered Penrose tiling substitution is bijective
May
21
awarded  Nice Answer
May
3
awarded  Enlightened
May
3
awarded  Nice Answer
Apr
27
comment Mysterious identity between numbers of odd/even meander systems
A reference is section 6 here arxiv.org/abs/hep-th/9506030
Apr
9
revised Is the number of vertices bounded for fixed max degree and fixed diameter?
added 4 characters in body
Apr
9
answered Is the number of vertices bounded for fixed max degree and fixed diameter?
Mar
29
awarded  Good Question
Mar
12
comment What's the analogue of a Young symmetrizer in the Brauer algebra?
There is an explicit formula in Nazarov's 2002 ICM address arxiv.org/abs/math/0209129 or his previous paper with a similar title. His setting is slightly more general but it's not hard to specialize to the Brauer algebra.
Mar
10
awarded  Good Answer
Mar
9
comment A set of integers whose factorial can be written as a product of two factorials
Some equations of the form $k!=P(n)$ ca be solved, but the case $P(n)=n(n-1)$ is still out of reach, I believe. mathoverflow.net/questions/39210/…
Mar
3
awarded  polynomials
Mar
2
comment On a reciprocal of Ostrowski theorem on Newton polytopes and factorization
@Bruno, the stronger question has a negative answer, too. I added an example to the answer.
Mar
2
revised On a reciprocal of Ostrowski theorem on Newton polytopes and factorization
added 451 characters in body
Mar
2
answered On a reciprocal of Ostrowski theorem on Newton polytopes and factorization