Nonlocal problems for partial differential equations.
Main publications:
Sergei A. Beilin, “Existence of solutions for one-dimensional wave equations with nonlocal conditions”, Electronic Journal of Differential Equations, 2001, no. 76, 8 p.
Sergei A. Beilin, “On a mixed nonlocal problem for a wave equation”, Electronic Journal of Differential Equations, 2006, no. 103, 10 p.
S. A. Beilin, “On a certain problem for a wave equation”, Vestnik Samarskogo Gosudarstvennogo Universiteta. Estestvenno-Nauchnaya Seriya, 2011, no. 5(86), 12–17
S. A. Beilin, “Об одной задаче для уравнения теплопроводности с нелокальным интегральным условием первого рода”, Matem. Mod. Kraev. Zadachi, 3 (2010), 38–39
2004
3.
S. A. Beilin, “On one property of Bessel function $J_{\nu}(x)$ roots”, Vestn. Samar. Gos. Tekhn. Univ., Ser. Fiz.-Mat. Nauki [J. Samara State Tech. Univ., Ser. Phys. Math. Sci.], 30 (2004), 186–187