Results 11 to 20 of about 181,750,129 (113)

Abstract robust coarse spaces for systems of PDEs via generalized eigenproblems in the overlaps [PDF]

open access: yes, 2013
Coarse spaces are instrumental in obtaining scalability for domain decomposition methods for partial differential equations (PDEs). However, it is known that most popular choices of coarse spaces perform rather weakly in the presence of heterogeneities ...
Dolean Maini, Victorita   +5 more
core   +4 more sources

Stochastic PDEs with multiscale structure [PDF]

open access: yes, 2012
We study the spatial homogenisation of parabolic linear stochastic PDEs exhibiting a two-scale structure both at the level of the linear operator and at the level of the Gaussian driving noise.
Martin Hairer   +3 more
core   +1 more source

Cluster robust error estimates for the Rayleigh–Ritz approximation II: Estimates for eigenvalues [PDF]

open access: yes, 2005
This is the second part of a paper that deals with error estimates for the Rayleigh–Ritz approximations of the spectrum and invariant subspaces of a bounded Hermitian operator in a Hilbert or Euclidean space.
E. Ovtchinnikov, Ovtchinnikov, E.
core   +1 more source

Inhomogeneous parabolic equations on unbounded metric measure spaces [PDF]

open access: yes, 2012
We study the inhomogeneous semilinear parabolic equation ut = Δu + up + f(x), with source term f independent of time and subject to f(x) ≥ 0 and with u(0, x) = φ(x) ≥ 0, for the very general setting of a metric measure space. By establishing Harnack-type
Hu, Jiaxin   +5 more
core   +1 more source

Decay estimates for 1-D parabolic PDES with boundary disturbances [PDF]

open access: yes, 2018
In this work, decay estimates are derived for the solutions of 1-D linear parabolic PDEs with disturbances at both boundaries and distributed disturbances.
Iasson Karafyllis   +3 more
core   +1 more source

The main eigenvalues of a graph: a survey [PDF]

open access: yes, 2007
We survey results relating main eigenvalues and main angles to the structure of a graph. We provide a number of short proofs, and note the connection with star partitions.
Peter Rowlinson, Rowlinson, Peter
core   +1 more source

Eigenvalue counting estimates for a class of linear spectral pencils with applications to zero modes [PDF]

open access: yes, 2012
Consider a linear spectral pencil of the form P(−i∇)− zQ(x), z ∈ C. If P−1 ∈ weak-Lp and Q ∈ Lp for some 1 < p
Elton, Daniel, Ta, Tri Ngoc
core   +4 more sources

Probabilistic representations of solutions of nonlinear PDEs

open access: yes, 2022
We provide new probabilistic representations for solutions of nonlinear differential equations through the use of branching processes. These stochastic methods are used to derive local existence criteria and can be implemented for Monte Carlo simulations
Penent, Guillaume
core   +1 more source

An ALE ESFEM for solving PDEs on evolving surfaces [PDF]

open access: yes, 2012
Numerical methods for approximating the solution of partial differential equations on evolving hypersurfaces using surface finite elements on evolving triangulated surfaces are presented.
Vanessa Styles (4460662)   +3 more
core   +1 more source

Statistical Data Compiled and Published by the Bureau of Crop Estimates, 1863-1920 [PDF]

open access: yes
Excerpts from the Foreword: The Bureau of Crop Estimates (Bureau of Statistics) has collected and compiled data relating to agriculture since its organization as a statistical division in the Patent Office in 1840, and has published such data in various ...
Bureau of Crop Estimates
core   +1 more source

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