Geodesic
Nontrivial outer derivations in bimodules over group rings
Eurasian mathematical journal, Tome 13 (2022) no. 4, pp. 8-17.

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Paper is devoted to the description of outer derivations for bimodules over group rings. Examples of corresponding bimodules with nontrivial outer derivations are constructed and their properties are investigated, in particular, their dependence on generating sets. Various types of groups by type of growth are investigated: polynomial and exponential. 
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A. A. Arutyunov; A. V. Naianzin. Nontrivial outer derivations in bimodules over group rings. Eurasian mathematical journal, Tome 13 (2022) no. 4, pp. 8-17. http://geodesic.mathdoc.fr/item/EMJ_2022_13_4_a0/

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