Geodesic
Mellin–Barnes integrals related to the Lie algebra $u(N)$
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 28, Tome 509 (2021), pp. 176-184 Cet article a éte moissonné depuis la source Math-Net.Ru

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We present an alternative proof of Gustafson's generalization of the second Barnes' lemma. 
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A. N. Manashov. Mellin–Barnes integrals related to the Lie algebra $u(N)$. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 28, Tome 509 (2021), pp. 176-184. http://geodesic.mathdoc.fr/item/ZNSL_2021_509_a10/

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