The Casimir element
Fundamentalʹnaâ i prikladnaâ matematika, Tome 18 (2013) no. 3, pp. 43-52.

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We consider the problem of constructing the Casimir operator of the fourth order for the orthogonal group of the fifth order. The problem is completely solved. The explicit form of the Casimir operator is obtained.
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N. I. Vishnevskaya. The Casimir element. Fundamentalʹnaâ i prikladnaâ matematika, Tome 18 (2013) no. 3, pp. 43-52. http://geodesic.mathdoc.fr/item/FPM_2013_18_3_a3/

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