Kostin, A. V. Some generalizations of the shadow problem in the Lobachevsky space. (English. Ukrainian original) Zbl 1483.52008 Ukr. Math. J. 73, No. 1, 67-75 (2021); translation from Ukr. Mat. Zh. 73, No. 1, 61-68 (2021). Reviewer: Zsolt Lángi (Budapest) MSC: 52A55 52A30 51M10 PDF BibTeX XML Cite \textit{A. V. Kostin}, Ukr. Math. J. 73, No. 1, 67--75 (2021; Zbl 1483.52008); translation from Ukr. Mat. Zh. 73, No. 1, 61--68 (2021) Full Text: DOI OpenURL
Humenchuk, H. I. On the sum of narrow and finite-rank orthogonally additive operators. (English. Ukrainian original) Zbl 1482.47109 Ukr. Math. J. 67, No. 12, 1831-1837 (2016); translation from Ukr. Mat. Zh. 67, No. 12, 1620-1625 (2015). MSC: 47H30 46E30 47B65 47B38 PDF BibTeX XML Cite \textit{H. I. Humenchuk}, Ukr. Math. J. 67, No. 12, 1831--1837 (2016; Zbl 1482.47109); translation from Ukr. Mat. Zh. 67, No. 12, 1620--1625 (2015) Full Text: DOI OpenURL
Ganikhodzhaev, N. N.; Zhamilov, U. U.; Mukhitdinov, R. T. Nonergodic quadratic operators for a two-sex population. (English. Ukrainian original) Zbl 1331.37136 Ukr. Math. J. 65, No. 8, 1282-1291 (2014); translation from Ukr. Mat. Zh. 65, No. 8, 1152-1160 (2013). MSC: 37N25 PDF BibTeX XML Cite \textit{N. N. Ganikhodzhaev} et al., Ukr. Math. J. 65, No. 8, 1282--1291 (2014; Zbl 1331.37136); translation from Ukr. Mat. Zh. 65, No. 8, 1152--1160 (2013) Full Text: DOI OpenURL
Romanyuk, A. S. On the problem of linear widths of the classes \(B_{p,\theta}^r\) of periodic functions of many variables. (English. Ukrainian original) Zbl 1309.41014 Ukr. Math. J. 66, No. 7, 1085-1098 (2014); translation from Ukr. Mat. Zh. 66, No. 7, 970-982 (2014). MSC: 41A46 42A10 PDF BibTeX XML Cite \textit{A. S. Romanyuk}, Ukr. Math. J. 66, No. 7, 1085--1098 (2014; Zbl 1309.41014); translation from Ukr. Mat. Zh. 66, No. 7, 970--982 (2014) Full Text: DOI OpenURL
Rozikov, U. A.; Zhamilov, U. U. Volterra quadratic stochastic operators of a two-sex population. (English. Russian original) Zbl 1232.47060 Ukr. Math. J. 63, No. 7, 1136-1153 (2011); translation from Ukr. Mat. Zh. 63, No. 7, 985-998 (2011). MSC: 47N60 47H40 47H10 37C20 37C25 92D25 PDF BibTeX XML Cite \textit{U. A. Rozikov} and \textit{U. U. Zhamilov}, Ukr. Math. J. 63, No. 7, 1136--1153 (2011; Zbl 1232.47060); translation from Ukr. Mat. Zh. 63, No. 7, 985--998 (2011) Full Text: DOI OpenURL