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This article is cited in 1 scientific paper (total in 1 paper)
Partial Differential Equations
On critical exponents for weak solutions of the Cauchy problem for a $(2+1)$-dimensional nonlinear composite-type equation with gradient nonlinearity
M. O. Korpusova, A. K. Matveevaab a Faculty of Physics, Lomonosov Moscow State University, 119992, Moscow, Russia
b National Engineering Physics Institute "MEPhI", 115409, Moscow, Russia
Abstract:
The Cauchy problem for a model nonlinear equation with gradient nonlinearity is considered. We prove the existence of two critical exponents, $q_1=2$ and $q_2=3$, such that this problem has no local-in-time weak (in some sense) solution for $1<q\le q_1$, while such a solution exists for $q>q_1$, but, for $q_1<q\le q_2$, there is no global-in-time weak solution.
Key words:
nonlinear Sobolev-type equations, blow-up, local solvability, nonlinear capacity, blow-up time estimates.
Received: 04.05.2022 Revised: 22.12.2022 Accepted: 03.03.2023
Citation:
M. O. Korpusov, A. K. Matveeva, “On critical exponents for weak solutions of the Cauchy problem for a $(2+1)$-dimensional nonlinear composite-type equation with gradient nonlinearity”, Zh. Vychisl. Mat. Mat. Fiz., 63:6 (2023), 1006–1021; Comput. Math. Math. Phys., 63:6 (2023), 1070–1084
Linking options:
https://www.mathnet.ru/eng/zvmmf11574 https://www.mathnet.ru/eng/zvmmf/v63/i6/p1006
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