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New identities for binary Krawtchouk polynomials, binomial coefficients and Catalan numbers
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math.CO
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identitiesbinarybinomialcatalancoefficientskrawtchouknumberspolynomials
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abstract
We obtain new combinatorial identities for integral values of binary Krawtchouk polynomials $K^{2m}_p(x)$, $0\le p\le 2m$, by computing the characters of the $p$-exterior representations on certain elements of order 2 of $\mathrm{SO}(2m)$. From this identities, we deduce several new relations for binomial coefficients and Catalan numbers.
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