Results 141 to 150 of about 4,977,477 (349)

Some nonlinear problems for the superposition of fractional operators with Neumann boundary conditions

open access: yesMathematische Nachrichten, EarlyView.
Abstract We discuss the existence theory of a nonlinear problem of nonlocal type subject to Neumann boundary conditions. Differently from the existing literature, the elliptic operator under consideration is obtained as a superposition of operators of mixed order. The setting that we introduce is very general and comprises, for instance, the sum of two
Serena Dipierro   +3 more
wiley   +1 more source

On locally Hilbert spaces

open access: yesOpuscula Mathematica, 2016
This is an investigation of some basic properties of strictly inductive limits of Hilbert spaces, called locally Hilbert spaces, with respect to their topological properties, the geometry of their subspaces, linear functionals and dual spaces.
openaire   +4 more sources

A highly accurate numerical method for solving boundary value problem of generalized Bagley‐Torvik equation

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
A highly accurate numerical method is given for the solution of boundary value problem of generalized Bagley‐Torvik (BgT) equation with Caputo derivative of order 0<β<2$$ 0<\beta <2 $$ by using the collocation‐shooting method (C‐SM). The collocation solution is constructed in the space Sm+1(1)$$ {S}_{m+1}^{(1)} $$ as piecewise polynomials of degree at ...
Suzan Cival Buranay   +2 more
wiley   +1 more source

Increasing the Hilbert space dimension using a single coupled molecular spin. [PDF]

open access: yesNat Commun, 2021
Biard H   +5 more
europepmc   +1 more source

A problem in hilbert space [PDF]

open access: yesIndagationes Mathematicae (Proceedings), 1960
J.H. van Lint, KA Karel Post
openaire   +2 more sources

Exponential Stability of Higher Order Fractional Neutral Stochastic Differential Equation Via Integral Contractors

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 6, Page 6425-6446, April 2025.
ABSTRACT The well‐posedness results for mild solutions to the fractional neutral stochastic differential system with Rosenblatt process with Hurst index Ĥ∈12,1$$ \hat{H}\in \left(\frac{1}{2},1\right) $$ is discussed in this article. To demonstrate the results, the concept of bounded integral contractors is combined with the stochastic result and ...
Dimplekumar N. Chalishajar   +3 more
wiley   +1 more source

Generalized φ$$ \varphi $$‐Pullback Attractors in Time‐Dependent Spaces: Application to a Nonautonomous Wave Equation With Time‐Dependent Propagation Velocity

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We present sufficient conditions to obtain a generalized (φ,D)$$ \left(\varphi, \mathfrak{D}\right) $$‐pullback attractor for evolution processes on time‐dependent phase spaces, where φ$$ \varphi $$ is a given decay function and D$$ \mathfrak{D} $$ is a given universe.
Matheus Cheque Bortolan   +3 more
wiley   +1 more source

Measures of Distance in Quantum Mechanics

open access: yesUniverse
Combining gravity with quantum theory is still a work in progress. On the one hand, classical gravity is the geometry of space-time determined by the energy–momentum tensor of matter and the resulting nonlinear equations; on the other hand, the ...
Pawel Gusin   +2 more
doaj   +1 more source

Approximating Common Fixed Points of Nonspreading-Type Mappings and Nonexpansive Mappings in a Hilbert Space

open access: yesAbstract and Applied Analysis, 2012
We obtain some fundamental properties for k-strictly pseudo-nonspreading mappings in a Hilbert space. We study approximation of common fixed points of k-strictly pseudo-nonspreading mappings and nonexpansive mappings in a Hilbert space by using a new ...
Kyung Soo Kim
doaj   +1 more source

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