Results 21 to 30 of about 30,152 (96)

A generalization of Szebehely's inverse problem of dynamics [PDF]

, 2013
The so-called inverse problem of dynamics is about constructing a potential for a given family of curves. We observe that there is a more general way of posing the problem by making use of ideas of another inverse problem, namely the inverse problem of ...
Mestdag, T., Prince, G., Sarlet, W.
core   +3 more sources

Generalized Calabi-Yau metric and Generalized Monge-Ampere equation

, 2010
In the neighborhood of a regular point, generalized Kahler geometry admits a description in terms of a single real function, the generalized Kahler potential.
Hull, Chris M., Lindstrom, Ulf, Rocek, Martin, von Unge, Rikard, Zabzine, Maxim   +4 more
core   +1 more source

Five types of blow-up in a semilinear fourth-order reaction-diffusion equation: an analytic-numerical approach

, 2009
Five types of blow-up patterns that can occur for the 4th-order semilinear parabolic equation of reaction-diffusion type $$ u_t= -\Delta^2 u + |u|^{p-1} u \quad {in} \quad \ren \times (0,T), p>1, \quad \lim_{t \to T^-}\sup_{x \in \ren} |u(x,t)|= +\iy, $
Bakirova M I, Bebernes J, Bricmont J, Dalmasso R, Dold J W, Egorov Yu V, Fefferman C, Frank-Kamenetskii D A, Frank-Kamenetskii D A, Galaktinov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Galaktionov V A, Guo Y, Hamilton R, Herrero M A, Herrero M A, Ibragimov N H, Joulin G Mikishev A B Sivashinsky G I, Kato T, Kurdyumov S P, Kurdyumov S P, Lepin L A, Lepin L A, Leray J, Levitan B M, Loewner C, Lunardi A, Maz'ja V, Mitidieri E, Naimark M A, Nussair E S, Ovsiannikov L V, Pao C V, Peletier L A, Quittner P, Samarskii A A, Semenov N, Svirshchevskii S R, Svirshchevskii S R, Tao T, V A Galaktionov, Velazquez J J L, Zel'dovich Ya B   +52 more
core   +2 more sources

Universal fractal structures in the weak interaction of solitary waves in generalized nonlinear Schr\"{o}dinger equations

, 2007
Weak interactions of solitary waves in the generalized nonlinear Schr\"{o}dinger equations are studied. It is first shown that these interactions exhibit similar fractal dependence on initial conditions for different nonlinearities.
A. Hasegawa, A. S. Kovalev, Jianke Yang, M. J. Ablowitz, N. G. Vakhitov, Y. S. Kivshar, Yi Zhu   +6 more
core   +1 more source

Multidimensional stochastic differential equations with distributional drift [PDF]

, 2014
This paper investigates a time-dependent multidimensional stochastic differential equation with drift being a distribution in a suitable class of Sobolev spaces with negative derivation order.
Elena Issoglio, Elena Issoglio, Elena Issoglio, Francesco Russo, Francesco Russo, Franco Fl, Franco Fl, Franco Flandoli, Hal Id Hal   +8 more
core   +5 more sources

Infinite-Dimensional Estabrook-Wahlquist Prolongations for the sine-Gordon Equation

, 1995
We are looking for the universal covering algebra for all symmetries of a given pde, using the sine-Gordon equation as a typical example for a non-evolution equation.
Finley, III, J. D., McIver, John K.
core   +2 more sources

Uniqueness of signed measures solving the continuity equation for Osgood vector fields

, 2008
Nonnegative measure-valued solutions of the continuity equation are uniquely determined by their initial condition, if the characteristic ODE associated to the velocity field has a unique solution. In this paper we give a partial extension of this result
Ambrosio, Luigi, Bernard, Patrick
core   +2 more sources

Existence and Uniqueness of Perturbation Solutions to DSGE Models [PDF]

We prove that standard regularity and saddle stability assumptions for linear approximations are sufficient to guarantee the existence of a unique solution for all undetermined coefficients of nonlinear perturbations of arbitrary order to discrete time ...
Alexander Meyer-Gohde, Hong Lan
core  

Spacetime deployments parametrized by gravitational and electromagnetic fields

, 2004
On the basis of a "Punctual" Equivalence Principle of the general relativity context, we consider spacetimes with measurements of conformally invariant physical properties.
Grandou, Thierry, Rubin, Jacques L.
core   +1 more source

Steady-State and Dynamical Behavior of a PDE Model of Multilevel Selection with Pairwise Group-Level Competition. [PDF]

Bull Math Biol
Alexiou K, Cooney DB.
europepmc   +1 more source