Garifullin, R. N.; Yamilov, R. I. On the integrability of lattice equations with two continuum limits. (English. Russian original) Zbl 1456.37082 J. Math. Sci., New York 252, No. 2, 283-289 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 159-164 (2018). MSC: 37K60 39A36 39A12 PDFBibTeX XMLCite \textit{R. N. Garifullin} and \textit{R. I. Yamilov}, J. Math. Sci., New York 252, No. 2, 283--289 (2021; Zbl 1456.37082); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 159--164 (2018) Full Text: DOI arXiv
Sharipov, R. A. Symmetry-based approach to the problem of a perfect cuboid. (English. Russian original) Zbl 1483.11059 J. Math. Sci., New York 252, No. 2, 266-282 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 143-158 (2018). MSC: 11D09 11D41 11D72 PDFBibTeX XMLCite \textit{R. A. Sharipov}, J. Math. Sci., New York 252, No. 2, 266--282 (2021; Zbl 1483.11059); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 143--158 (2018) Full Text: DOI
Khachay, O. Yu. Asymptotic problem for second-order ordinary differential equation with nonlinearity corresponding to a butterfly catastrophe. (English. Russian original) Zbl 1461.34078 J. Math. Sci., New York 252, No. 2, 247-265 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 125-142 (2018). Reviewer: Bertin Zinsou (Johannesburg) MSC: 34E05 34A34 34B40 34A12 34B08 PDFBibTeX XMLCite \textit{O. Yu. Khachay}, J. Math. Sci., New York 252, No. 2, 247--265 (2021; Zbl 1461.34078); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 125--142 (2018) Full Text: DOI
Sultanov, O. A. On the almost sure stability of dynamical systems with respect to white noise. (English. Russian original) Zbl 1453.93240 J. Math. Sci., New York 252, No. 2, 242-246 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 120-124 (2018). MSC: 93E15 93D20 34D10 60H40 60H10 PDFBibTeX XMLCite \textit{O. A. Sultanov}, J. Math. Sci., New York 252, No. 2, 242--246 (2021; Zbl 1453.93240); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 120--124 (2018) Full Text: DOI
Startsev, S. Ya. Symmetry drivers and formal integrals of hyperbolic systems. (English. Russian original) Zbl 1456.37068 J. Math. Sci., New York 252, No. 2, 232-241 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 110-119 (2018). MSC: 37K06 37K10 35L70 35L65 PDFBibTeX XMLCite \textit{S. Ya. Startsev}, J. Math. Sci., New York 252, No. 2, 232--241 (2021; Zbl 1456.37068); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 110--119 (2018) Full Text: DOI
Poluboyarova, N. M. Some properties of extremals of the functional of potential energy. (English. Russian original) Zbl 1453.49018 J. Math. Sci., New York 252, No. 2, 225-231 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 103-109 (2018). MSC: 49Q10 53A07 31A15 PDFBibTeX XMLCite \textit{N. M. Poluboyarova}, J. Math. Sci., New York 252, No. 2, 225--231 (2021; Zbl 1453.49018); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 103--109 (2018) Full Text: DOI
Mirzoev, K. A.; Konechnaya, N. N.; Safonova, T. A.; Tagirova, R. N. Generalized Jacobi matrices and spectral analysis of differential operators with polynomial coefficients. (English. Russian original) Zbl 1507.47100 J. Math. Sci., New York 252, No. 2, 213-224 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 91-102 (2018). MSC: 47E05 47B36 34L05 PDFBibTeX XMLCite \textit{K. A. Mirzoev} et al., J. Math. Sci., New York 252, No. 2, 213--224 (2021; Zbl 1507.47100); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 91--102 (2018) Full Text: DOI
Kordyukov, Yu. A. Laplacians on smooth distributions as \(C^*\)-algebra multipliers. (English. Russian original) Zbl 1465.58011 J. Math. Sci., New York 252, No. 2, 190-212 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 67-90 (2018). Reviewer: Alexander Engel (Münster) MSC: 58J60 53C17 46L08 58B34 PDFBibTeX XMLCite \textit{Yu. A. Kordyukov}, J. Math. Sci., New York 252, No. 2, 190--212 (2021; Zbl 1465.58011); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 67--90 (2018) Full Text: DOI arXiv
Kiselev, O. M.; Novokshenov, V. Yu. Emergence and decay of \(\pi \)-kinks in the sine-Gordon model with high-frequency pumping. (English. Russian original) Zbl 1458.35118 J. Math. Sci., New York 252, No. 2, 175-189 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 53-66 (2018). MSC: 35C08 35B27 35B35 35L20 35L71 31A05 30D15 31A15 PDFBibTeX XMLCite \textit{O. M. Kiselev} and \textit{V. Yu. Novokshenov}, J. Math. Sci., New York 252, No. 2, 175--189 (2021; Zbl 1458.35118); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 53--66 (2018) Full Text: DOI
Zhiber, A. V.; Yur’eva, A. M. On a certain class of hyperbolic equations with second-order integrals. (English. Russian original) Zbl 1457.35049 J. Math. Sci., New York 252, No. 2, 168-174 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 46-52 (2018). Reviewer: Saša Krešić-Jurić (Split) MSC: 35Q51 37K60 PDFBibTeX XMLCite \textit{A. V. Zhiber} and \textit{A. M. Yur'eva}, J. Math. Sci., New York 252, No. 2, 168--174 (2021; Zbl 1457.35049); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 46--52 (2018) Full Text: DOI
Vildanova, V. F.; Mukminov, F. Kh. Existence of weak solutions of the aggregation equation with the \(p ( \cdot )\)-Laplacian. (English. Russian original) Zbl 1453.35109 J. Math. Sci., New York 252, No. 2, 156-167 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 34-45 (2018). MSC: 35K20 35K92 35K65 35K61 35D30 35R09 PDFBibTeX XMLCite \textit{V. F. Vildanova} and \textit{F. Kh. Mukminov}, J. Math. Sci., New York 252, No. 2, 156--167 (2021; Zbl 1453.35109); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 34--45 (2018) Full Text: DOI
Valeev, N. F.; Nazirova, E. A. Direct and inverse spectral problems in the theory of oscillations of elastic plates with additional point interactions. (English. Russian original) Zbl 1502.74049 J. Math. Sci., New York 252, No. 2, 147-155 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 25-33 (2018). MSC: 74H45 74K20 47E05 34L05 PDFBibTeX XMLCite \textit{N. F. Valeev} and \textit{E. A. Nazirova}, J. Math. Sci., New York 252, No. 2, 147--155 (2021; Zbl 1502.74049); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 25--33 (2018) Full Text: DOI
Borisov, D. I. Perturbations of the continuous spectrum of a certain nonlinear two-dimensional operator sheaf. (English. Russian original) Zbl 1507.47102 J. Math. Sci., New York 252, No. 2, 135-146 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 13-24 (2018). MSC: 47F05 35P05 47A55 PDFBibTeX XMLCite \textit{D. I. Borisov}, J. Math. Sci., New York 252, No. 2, 135--146 (2021; Zbl 1507.47102); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 13--24 (2018) Full Text: DOI
Bagderina, Yu. Yu. Eigenfunctions of ordinary differential Euler operators. (English. Russian original) Zbl 1507.47099 J. Math. Sci., New York 252, No. 2, 125-134 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 3-12 (2018). MSC: 47E05 34L10 34B30 PDFBibTeX XMLCite \textit{Yu. Yu. Bagderina}, J. Math. Sci., New York 252, No. 2, 125--134 (2021; Zbl 1507.47099); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 3--12 (2018) Full Text: DOI