3 citations · 5 across the 11 of their papers we have counts for
15 papers
Global existence of the irrotational Euler-Nordström equations with a positive cosmological constant: The gravitational field equation
Uwe Brauer, Lavi Karp
Our aim is to establish the global existence of classical solutions to the nonlinear irrotational Euler--Nordström system, which incorporates a linear equation of state and a cosmo…
Global existence of a nonlinear wave equation arising from Nordström's theory of gravitation
Uwe Brauer, Lavi Karp
We show global existence of classical solutions for the nonlinear Nordström theory with a source term and a cosmological constant under the assumption that the source term is small…
Continuity of the flow map for symmetric hyperbolic systems and its application to the Euler--Poisson system
Uwe Brauer, Lavi Karp
We show the continuity of the flow map for quasilinear symmetric hyperbolic systems with general right--hand sides in different functional setting, including weighted Sobolev space…
A four--dimensional Neumann ovaloid
Lavi Karp, Erik Lundberg
What is the shape of a uniformly massive object that generates a gravitational potential equivalent to that of two equal point-masses? If the weight of each point-mass is sufficien…
Local existence of solutions to the Euler-Poisson system, including densities without compact support
Uwe Brauer, Lavi Karp
Local existence and well posedness for a class of solutions for the Euler Poisson system is shown. These solutions have a density which either falls off at infinity or has comp…
On the composition of finite rotations in
Alex Goldvard, Lavi Karp
We achieve compositions rules for the geometric parameters of the composed rotations, which is in a certain sense analogous to the well known Rodrigues formula. We also obtain a ne…