Durnev, Valeriĭ Georgievich; Zetkina, Oksana Valer’evna; Zetkina, Alena Igorevna On “simple” algorithmically undecidable fragments of elementary theory of an infinitely generated free semigroup. (Russian. English summary) Zbl 1477.03166 Chebyshevskiĭ Sb. 21, No. 4(76), 56-71 (2020). MSC: 03D35 20M05 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 21, No. 4(76), 56--71 (2020; Zbl 1477.03166) Full Text: MNR
Durnev, Valeriĭ Georgievich; Zetkina, Oksana Valer’evna; Zetkina, Alena Igor’evna On elementary theories of algebraically closed groups. (Russian. English summary) Zbl 1455.03045 Chebyshevskiĭ Sb. 21, No. 1(73), 165-178 (2020). MSC: 03C60 20F10 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 21, No. 1(73), 165--178 (2020; Zbl 1455.03045) Full Text: MNR
Durnev, V. G.; Zetkina, O. V.; Zetkina, A. I. On equations and inequalities in words and word lengths. (Russian. English summary) Zbl 1441.68199 Chebyshevskiĭ Sb. 17, No. 2(58), 137-145 (2016). MSC: 68R15 03D35 20M05 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 17, No. 2(58), 137--145 (2016; Zbl 1441.68199) Full Text: DOI MNR
Durnev, V. G.; Zetkina, O. V.; Zetkina, A. I. On amenable subgroups of \(F\)-groups. (Russian. English summary) Zbl 1441.20028 Chebyshevskiĭ Sb. 17, No. 2(58), 128-136 (2016). MSC: 20F65 20E06 20E07 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 17, No. 2(58), 128--136 (2016; Zbl 1441.20028) Full Text: DOI MNR
Durnev, V. G.; Zetkina, O. V. Some of the results obtained in the Yaroslavl branch algebraic school of M. D. Grindlinger. (Russian. English summary) Zbl 1434.20003 Chebyshevskiĭ Sb. 15, No. 4(52), 5-31 (2014). MSC: 20-03 01A60 01A72 20E05 20M05 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 15, No. 4(52), 5--31 (2014; Zbl 1434.20003) Full Text: MNR
Durnev, V. G.; Zetkina, O. V.; Zetkina, A. I. On the Tits’ alternative for subgroups of \(F\)-groups. (Russian. English summary) Zbl 1435.20057 Chebyshevskiĭ Sb. 15, No. 1(49), 110-120 (2014). MSC: 20H10 20F05 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 15, No. 1(49), 110--120 (2014; Zbl 1435.20057) Full Text: MNR
Durnev, V. G.; Zetkina, O. V.; Zetkina, A. I. On automorphic reducibility for sets elements of free groups. (Russian. English summary) Zbl 1431.20014 Chebyshevskiĭ Sb. 14, No. 3(47), 52-55 (2013). MSC: 20E05 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 14, No. 3(47), 52--55 (2013; Zbl 1431.20014) Full Text: MNR
Durnev, V. G.; Zetkina, O. V.; Zetkina, A. I. An algebraically closed groups. (Russian. English summary) Zbl 1431.20024 Chebyshevskiĭ Sb. 14, No. 3(47), 49-51 (2013). MSC: 20F10 03C60 20F70 PDFBibTeX XMLCite \textit{V. G. Durnev} et al., Chebyshevskiĭ Sb. 14, No. 3(47), 49--51 (2013; Zbl 1431.20024) Full Text: MNR
Durnev, V. G.; Zetkina, O. V. On formulas, true in periodic and finite groups. (Russian) Zbl 1279.20055 Chebyshevskiĭ Sb. 13, No. 1(41), 81-85 (2012). MSC: 20F70 20F10 20A15 03C60 20F50 20E05 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 13, No. 1(41), 81--85 (2012; Zbl 1279.20055) Full Text: MNR
Durnev, V. G.; Zetkina, O. V. On equations in free groups, not solvable with respect to the unknown, with constraints on solutions. (Russian) Zbl 1282.20051 Chebyshevskiĭ Sb. 13, No. 1(41), 63-80 (2012). MSC: 20F70 20F10 20E05 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 13, No. 1(41), 63--80 (2012; Zbl 1282.20051) Full Text: MNR
Durnev, V. G.; Zetkina, O. V. NP hardness of the problem of solvability of equations with simple right-hand side in a free group. (English) Zbl 1279.20041 Chebyshevskiĭ Sb. 13, No. 1(41), 46-53 (2012). MSC: 20F10 20E05 20F70 68Q25 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 13, No. 1(41), 46--53 (2012; Zbl 1279.20041) Full Text: MNR
Durnev, V. G.; Zetkina, O. V. On equations in free groups with restrictions on solutions. (English) Zbl 1274.20039 Chebyshevskiĭ Sb. 11, No. 3(34), 88-97 (2010). MSC: 20F70 20F10 20E05 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 11, No. 3(35), 88--97 (2010; Zbl 1274.20039) Full Text: MNR
Durnev, V. G.; Zetkina, O. V. On equations with subsemigroup constraints on solutions in free semigroups. (Russian) Zbl 1274.20053 Chebyshevskiĭ Sb. 11, No. 3(34), 78-87 (2010). MSC: 20M05 03D35 20F70 PDFBibTeX XMLCite \textit{V. G. Durnev} and \textit{O. V. Zetkina}, Chebyshevskiĭ Sb. 11, No. 3(35), 78--87 (2010; Zbl 1274.20053) Full Text: MNR