Results 71 to 80 of about 123 (116)
Blow-up of waves on singular spacetimes with generic spatial metrics. [PDF]
Lett Math Phys, 2022 Fajman D, Urban L.
europepmc +1 more source
On Trace Regularity of Solutions to a Wave Equation with Homogeneous Neumann Boundary Conditions
, 2007 We prove an additional regularity of time derivative of the trace of solution to the wave equation on the 3D half space with the homogeneous Neumann boundary conditions. Key words: wave equation, boundary trace regularity.
I. A. Ryzhkova
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Acoustic wave guides as infinitedimensional dynamical systems. arXiv:1211.7000
, 2012 . We prove the unique solvability, passivity/conservativity and some regularity results of two mathematical models for acoustic wave propagation in curved, variable diameter tubular structures of finite length.
Jarmo Malinen, Atte Aalto, Teemu Lukkari
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Metalycaeus laosensis Asami 2017, n. sp.
, 2017 Metalycaeus laosensis Páll-Gergely, n. sp. FIGUrE 47C. Type material. HOLOTypE MNHN IM-2012-27172, 26 L04 NOrTHErN LaOs, PHONGsaLy PrOvINCE, OLd fOrEsT NEar sTrEam apprOx.
Asami, Takahiro
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An Extension of the direct Method via an Application
, 2001 The Direct Method due to Clarkson and Kruskal [9] for finding similarity reductions of partial differential equations is extended to obtain similarity reductions of nonlinear partial differential equations with arbitrary functions. The extension is
Changzheng, Qu, Mahomed, FM
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Pseudospectra of the Wave Operator with an Absorbing Boundary
, 1993 For systems which can be described by u t = Au, with a highly non-normal matrix or operator A, the spectrum of A may describe the behavior of the system poorly.
Lloyd N. Trefethen +3 more
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Stability of a wave and Klein-Gordon system with mixed coupling
, 2020 19 pages, comments are welcomeWe are interested in establishing stability results for a system of semilinear wave and Klein-Gordon equations with mixed coupling nonlinearities, that is, we consider all of the possible quadratic nonlinear terms of the ...
Dong, Shijie
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Integral Operators with Singular Canonical Relations
, 1997 We derive certain estimates and asymptotics for oscillatory integral operators with degenerate phase functions, concentrating our attention on the situation when one of the projections from the associated canonical relation is a Whitney fold.
Andrew Comech
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Singular Solutions with Exponential Growth for the (3+1)-D Wave Equation
, 2011 Four-dimensional boundary value problems for the nonhomogeneous wave equation are studied. They were proposed by M. Protter as multidimensional analogues of Darboux problems in the plane. It is known that the unique generalized solution may have a strong
Scherer, Rudolf +2 more
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, 2020 In this paper, we consider a viscoelastic wave equation with dynamical boundary conditions. Under certain assumptions, we give the upper and lower bounds for the blow-up time according to the exponent numbers m and p of the nonlinear boundary damping ...
Liu, Wenjun, Li, Gang, Zhu, Biqing
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