Results 241 to 250 of about 742,712 (288)

Exploring nonlinear chaotic systems with applications in stochastic processes. [PDF]

Sci Rep
Abdelwahed HG, Elbaz IM, Sohaly MA, Abdelrahman MAE, Alsarhan AF, Al-Rasheed AM.   +5 more
europepmc   +1 more source

Fear-driven predator-prey dynamics with prey refuge: analytical framework and physics-informed neural network approach. [PDF]

Front Artif Intell
Ramraj G, Poornima T.
europepmc   +1 more source

Quantum Cosmology in Krylov Space: Complexity and Entropy. [PDF]

Entropy (Basel)
Motaharfar M, Siebersma MR, Singh P.
europepmc   +1 more source

Some Parabolic Equations with Unbounded Coefficients

Some Parabolic Equations with Unbounded Coefficients
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Generation of Analytic Semigroups by Elliptic Operators with Unbounded Coefficients

SIAM Journal on Mathematical Analysis, 1987
This paper concerns the connections between (parabolic) partial differential equations and the abstract theory of evolution equations. The authors consider second order elliptic operators \[ E=\sum a_{ij}(x)D_{ij}+\sum b_ i(x)D_ i-c(x),\quad x\in {\mathbb{R}}^ N \] allowing the lower order coefficients \(b_ i(x)\) and c(x) to be unbounded at infinity ...
Vincenzo Vespri, Piermarco Cannarsa
exaly   +4 more sources

Continuity of the Filter with Unbounded Observation Coefficients

Stochastic Analysis and Applications, 2011
In this article, we study the continuity with respect to the trajectories of the observation process for the filter associated with nonlinear filtering problems when the coefficients depend on both the signal and the observation and the observation coefficient is unbounded.
Patrick Florchinger, NAPPO, Giovanna
openaire   +3 more sources

Noncoercive elliptic equations with discontinuous coefficients in unbounded domains [PDF]

Nonlinear Analysis: Theory, Methods & Applications, 2017
In this paper we study Dirichlet problems for noncoercive linear elliptic equations with discontinuous coefficients in unbounded domains.
Sara Monsurrõ, Maria Transirico, Sara Monsurrõ   +2 more
exaly   +2 more sources

Lp-uniqueness for elliptic operators with unbounded coefficients inRN [PDF]

Journal of Functional Analysis, 2009
Let A be an elliptic operator with unbounded and sufficiently smooth coefficients and let μ be a (sub)-invariant measure of the operator A. In this paper we give sufficient conditions guaranteeing that the closure of the operator (A,Cc∞(RN)) generates a ...
Luca Lorenzi, Angela A Albanese, Elisabetta Mangino   +2 more
exaly   +2 more sources

Kernel estimates for parabolic systems of partial differential equations with unbounded coefficients

Journal of Mathematical Analysis and Applications
We provide pointwise upper bounds for the transition kernels of semigroups associated with a class of systems of nondegenerate elliptic partial differential equations with unbounded coefficients with possibly unbounded diffusion coefficients, which may ...
Luca Lorenzi, Davide Addona
exaly   +2 more sources

Riccati equations with unbounded coefficients

Annali di Matematica Pura ed Applicata, 1985
We give some results on the operator Riccati equation arising in linear quadratic optimal control problems. Our theory covers boundary control as well as pointwise control problems.
G. Da Prato, A. Ichikawa
openaire   +1 more source