Geodesic
On $\omega$-Schunck classes and generalized projectors of finite groups
Trudy Instituta matematiki, Tome 27 (2019) no. 1, pp. 13-22.

Voir la notice de l'article provenant de la source Math-Net.Ru

Let $\omega$ be a non-empty set of primes. The operations $\mathrm{Q}_{\omega}$, $\mathrm{P}_{\omega}$ and $\mathrm{E}_{\Phi\omega}$ on classes of finite groups are introduced and studied. The $\omega$-Schunck class is defined and its applications to finding generalized projectors of groups and studying their properties are obtained. 
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T. I. Vasilyeva. On $\omega$-Schunck classes and generalized projectors of finite groups. Trudy Instituta matematiki, Tome 27 (2019) no. 1, pp. 13-22. http://geodesic.mathdoc.fr/item/TIMB_2019_27_1_a1/

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