Energy Stability for a Class of Semilinear Elliptic Problems

被引:2
|
作者
Afonso, Danilo Gregorin [1 ]
Iacopetti, Alessandro [2 ]
Pacella, Filomena [1 ]
机构
[1] Sapienza Univ Roma, Dipartimento Matemat Guido Castelnuovo, Piazzale Aldo Moro 5, I-00185 Rome, Italy
[2] Univ Torino, Dipartimento Matemat G Peano, Via Carlo Alberto 10, I-10123 Turin, Italy
关键词
Semilinear elliptic equations; Variational methods; Stability; Shape optimization in unbounded domains; ISOPERIMETRIC-INEQUALITIES; RADIAL SOLUTIONS; UNIQUENESS;
D O I
10.1007/s12220-023-01525-1
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, we consider semilinear elliptic problems in a bounded domain Omega contained in a given unbounded Lipschitz domain C subset of R-N. Our aim is to study how the energy of a solution behaves with respect to volume-preserving variations of the domain Omega inside C. Once a rigorous variational approach to this question is set, we focus on the cases when C is a cone or a cylinder and we consider spherical sectors and radial solutions or bounded cylinders and special one-dimensional solutions, respectively. In these cases, we show both stability and instability results, which have connections with related overdetermined problems.
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页数:43
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