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6 votes
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Is this just a numerical accident or what?

In a complementary proof for a matrix determinant of $a_{i,j}=\binom{n-1+i}j$, raised by BillyJoe, I showed the more general evaluation $$\det\left(\binom{i+p}{j+k-1}\right)_{1\leq i,j\leq m} =\prod_{...
T. Amdeberhan's user avatar
4 votes
0 answers
163 views

An identity for Schur polynomials

Given a partition $\lambda$, the Schur polynomials can be defined, among many other ways, as $$S_{\lambda}(\xi_1,\dots,\xi_a)=\frac{\det\left(\xi_i^{\lambda_j+a-j}\right)_{i,j=1}^a}{\det\left(\xi_i^{a-...
T. Amdeberhan's user avatar
4 votes
0 answers
205 views

Dimension of a certain space of symmetric functions: Part I

Let $s_{\lambda}$ denote the Schur polynomial associated to a partition $\lambda$. A partition $\lambda$ is called a $t$-core if none of its hook lengths are multiples of $t$. QUESTION. Consider the ...
T. Amdeberhan's user avatar
2 votes
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87 views

Reference request on Plancherel measure for partitions whose parts differing by more than $1$

Given an (unrestricted) integer partition $\lambda$ of $n$, let $f_{\lambda}$ denote the number of standard Young tableaux (SYT) of shape the Young diagram $Y(\lambda)$ of $\lambda$. Then, $$\sum_{\...
T. Amdeberhan's user avatar
1 vote
0 answers
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Dimension of a certain space of symmetric functions: Part II

This is the second installment of my earlier MO question. Let $s_{\lambda}$ denote the Schur polynomial associated to a partition $\lambda$. Denote the set of all partitions with distinct parts by $\...
T. Amdeberhan's user avatar
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171 views

Total sum of characters over partitions with distinct parts

In my earlier quest, we looked at $\chi_{\mu}^{\lambda}=$value of an irreducible character of the symmetric group $\frak{S}_n$, where $\mu$ and $\lambda$ are (unrestricted) partitions of $n$. Then, ...
T. Amdeberhan's user avatar