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Ambrosetti-Prodi problem with degenerate potential and Neumann boundary condition
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Repovš, Dušan
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Abstract
We study the degenerate elliptic equation ▫$$ -\operatorname{div}(|x|^\alpha \nabla u) = f(u) + t\phi(x) + h(x)$$▫ in a bounded open set ▫$\Omega$▫ with homogeneous Neumann boundary condition, where ▫$\alpha \in (0,2)$▫ and ▫$f$▫ has a linear growth. The main result establishes the existence of real numbers and ▫$t^\ast$▫ such that the problem has at least two solutions if ▫$t \leq t_\ast$▫, there is at least one solution if ▫$t_\ast < t \leq t^\ast$▫, and no solution exists for all ▫$t > t^\ast$▫. The proof combines a priori estimates with topological degree arguments.
Language:
English
Keywords:
Ambrosetti-Prodi problem
,
degenerate potential
,
topological degree
,
anisotropic continuous media
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
PEF - Faculty of Education
FMF - Faculty of Mathematics and Physics
Year:
2018
Number of pages:
art. no. 41, str. 1-10
Numbering:
Vol. 2018
PID:
20.500.12556/RUL-109446
UDC:
517.956
ISSN on article:
1072-6691
COBISS.SI-ID:
18249305
Publication date in RUL:
03.09.2019
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1237
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168
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Record is a part of a journal
Title:
Electronic journal of differential equations
Shortened title:
Electr. j. differ. equ.
Publisher:
Southwest Texas State University, University of North Texas
ISSN:
1072-6691
COBISS.SI-ID:
7027289
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