A mixed boundary value problem for u = f(x,y,u,u,u)
A mixed boundary value problem for u = f(x,y,u,u,u)
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u−=−f(x,y,u,u,u) 的混合边值问题
DOI:
10.1016/j.jde.2019.11.063
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发表时间:
2020
影响因子:
2.4
通讯作者:
Kogan, Irina A.
中科院分区:
文献类型:
--
作者:
Jenssen, Helge Kristian;Kogan, Irina A.
Consider a single hyperbolic PDE u x y= f (x, y, u, u x, u y), with locally prescribed data: u along a non-characteristic curve M and u x along a non-characteristic curve N. We assume that M and N are graphs of one-to-one functions, intersecting only at the origin, and located in the first quadrant of the (x, y)-plane. It is known that if M is located above N, then there is a unique local solution, obtainable by successive approximation. We show that in the opposite case, when M lies below N, the uniqueness can fail in the following strong sense: for the same boundary data, there are two solutions that differ at points arbitrarily close to the origin. In the latter case, we also establish existence of a local solution (under a Lipschitz condition on the function f). The construction, via Picard iteration, makes use of a careful choice of additional u-data which are updated in each iteration step.
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影响因子:
0.5
作者:
A. T. Lonseth;W. Pogorzelski
通讯作者:
W. Pogorzelski
影响因子:
0.5
作者:
Z. Szmydt
通讯作者:
Z. Szmydt
影响因子:
0.5
作者:
Z. Szmydt
通讯作者:
Z. Szmydt
影响因子:
0.6
作者:
S. Kharibegashvili;O. Jokhadze
通讯作者:
O. Jokhadze
DOI:
10.2307/3603459
发表时间:
1903
期刊:
The Mathematical Gazette
影响因子:
--
作者:
J. E. Wright
通讯作者:
J. E. Wright