Lower bounds for solutions of perturbed Helmholtz equations in exterior regions
DOI10.1016/0022-247X(84)90206-3zbMath0552.35015MaRDI QIDQ801471
Publication date: 1984
Published in: Journal of Mathematical Analysis and Applications (Search for Journal in Brave)
energy estimatesKlein-Gordon equationSchrödinger equationHelmholtz equationdifferential inequalities
Partial differential inequalities and systems of partial differential inequalities (35R45) A priori estimates in context of PDEs (35B45) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) PDEs on infinite-dimensional (e.g., function) spaces (= PDEs in infinitely many variables) (35R15)
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