Found 50 Documents (Results 1–50)
Radial symmetry and partially overdetermined problems in a convex cone. (English) Zbl 1528.35079
Reviewer: Antonio Greco (Cagliari)
Scattering by finely layered obstacles: frequency-explicit bounds and homogenization. (English) Zbl 1514.35019
Existence of positive solutions to nonlinear integral equations on the Heisenberg group. (English) Zbl 1516.45003
Reviewer: Jürgen Appell (Würzburg)
A non-existence result for a generalized radial Brezis-Nirenberg problem. (English) Zbl 1480.35204
Exner, Pavel (ed.) et al., Partial differential equations, spectral theory, and mathematical physics. The Ari Laptev anniversary volume. Berlin: European Mathematical Society (EMS). EMS Ser. Congr. Rep., 1-15 (2021).
Shape perturbation of Grushin eigenvalues. (English) Zbl 1479.35450
Reviewer: Marius Ghergu (Dublin)
Higher order Poisson kernels and \(L^p\) polyharmonic boundary value problems in Lipschitz domains. (English) Zbl 1446.31006
Eigenvalues of the Finsler \(P\)-Laplacian on varying domains. (English) Zbl 1450.35193
Reviewer: Gianpaolo Piscitelli (Cassino)
Approximate cloaking using transformation optics for acoustic and electromagnetic waves. (English) Zbl 1433.35384
Acoustic transmission problems: wavenumber-explicit bounds and resonance-free regions. (English) Zbl 1414.35057
MSC:
35J05
The Helmholtz equation in heterogeneous media: a priori bounds, well-posedness, and resonances. (English) Zbl 1421.35056
Reviewer: Vicenţiu D. Rădulescu (Craiova)
The Brezis-Nirenberg problem for the Laplacian with a singular drift in \(\mathbb{R}^n\) and \(\mathbb{S}^n\). (English) Zbl 1379.35094
Reviewer: Bodo Dittmar (Halle)
Approximate cloaking for the full wave equation via change of variables: the Drude-Lorentz model. (English. French summary) Zbl 1368.35037
Biharmonic equations under Dirichlet boundary conditions with supercritical growth. (English) Zbl 1383.35075
Applying GMRES to the Helmholtz equation with shifted Laplacian preconditioning: What is the largest shift for which wavenumber-independent convergence is guaranteed? (English) Zbl 1328.65238
Reviewer: Adhemar Bultheel (Leuven)
Sharp norm estimates of layer potentials and operators at high frequency. (English) Zbl 1327.31015
Reviewer: Michael Reissig (Freiberg)
Generalized impedance boundary conditions for strongly absorbing obstacle: the full wave equation. (English) Zbl 1329.35182
Reviewer: Claudia Simionescu-Badea (Wien)
Trefftz discontinuous Galerkin methods for acoustic scattering on locally refined meshes. (English) Zbl 1288.65166
On a frequency function approach to the unique continuation principle. (English) Zbl 1262.35099
Reviewer: Fabio Paronetto (Padova)
Upper and lower bounds for normal derivatives of spectral clusters of Dirichlet Laplacian. (English) Zbl 1246.58006
Reviewer: Hans-Bert Rademacher (Leipzig)
MSC:
58C40
Some inequalities and asymptotic formulas for eigenvalues on Riemannian manifolds. (English) Zbl 1209.53027
Reviewer: Jan Kurek (Lublin)
Nonlinear Neumann boundary stabilization of the wave equation using rotated multipliers. (English) Zbl 1203.93172
Boundary stabilization of elastodynamic systems. I: Rellich-type relations for a problem in elasticity involving singularities. (English) Zbl 1205.35305
Reviewer: Erdoǧan S. Şuhubi (İstanbul)
Rellich type identities for eigenvalue problems and application to the Pompeiu problem. (English) Zbl 1135.35008
Reviewer: Messoud A. Efendiev (Berlin)
Symmetry theorems for the overdetermined eigenvalue problems. (English) Zbl 1129.35051
Reviewer: Boris V. Loginov (Ul’yanovsk)
Sharp regularity coefficient estimates for complex-valued acoustic and elastic Helmholtz equations. (English) Zbl 1134.35317
On an oblique boundary value problem related to the Backus problem in geodesy. (English) Zbl 1158.86321
Transmission problems and spectral theory for singular integral operators on Lipschitz domains. (English) Zbl 1081.35020
Nonexistence for semilinear equations and systems in the Heisenberg group. (English) Zbl 0941.35013
Reviewer: Marco Biroli (Monza)
Critical phenomena in linear elliptic problems. (English) Zbl 0920.35044
Reviewer: István Győri (Veszprém)
The method of layer potentials for non-smooth domains with arbitrary topology. (English) Zbl 0915.35032
Reviewer: M.Kracht (Düsseldorf)
A remark on the critical explosion parameter for a semilinear elliptic equation in a generic domain using an explosion time of an ordinary differential equation. (English) Zbl 0922.35115
Variational identities and applications to differential systems. (English) Zbl 0796.35059
Reviewer: A.Leaci (Lecce)
Asymptotic expansions for a class of Fourier integrals and applications to the Pompeiu problem. (English) Zbl 0737.35146
Reviewer: C.A.Berenstein (College Park)
Estimates for the boundary values of the solutions of certain nonlinear elliptic equations. (English) Zbl 0502.35042
Existence theorems, qualitative results and priori bounds for a class of non-linear Dirichlet problems. (English) Zbl 0335.35046
Kriterien für das Fehlen quadratisch integrierbarer Lösungen der Differentialgleichung \(-\Delta v = f(x,v)\) in Außengebieten. (German) Zbl 0167.40201
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