Results 11 to 20 of about 434 (146)

Nonlinear Fokker-Planck Equations with Time-Dependent Coefficients [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2021
An operatorial based approach is used here to prove the existence and uniqueness of a strong solution $u$ to the time-varying nonlinear Fokker--Planck equation $u_t(t,x)-\Delta(a(t,x,u(t,x))u(t,x))+{\rm div}(b(t,x,u(t,x))u(t,x))=0$ in $(0,\infty)\times ...
V. Barbu, M. Röckner
semanticscholar   +3 more sources

Convergence and weaker control conditions for hybrid iterative algorithms [PDF]

open access: yesFixed Point Theory and Applications, 2011
Very recently, Yao et al. (Appl. Math. Comput. 216, 822-829, 2010) have proposed a hybrid iterative algorithm. Under the parameter sequences satisfying some quite restrictive conditions, they derived a strong convergence theorem in a Hilbert space.
Wang Shuang
doaj   +2 more sources

The shrinking projection method for solving generalized equilibrium problems and common fixed points for asymptotically quasi-ϕ-nonexpansive mappings

open access: yesFixed Point Theory and Applications, 2011
In this article, we introduce a new hybrid projection iterative scheme based on the shrinking projection method for finding a common element of the set of solutions of the generalized mixed equilibrium problems and the set of common fixed points for a ...
Saewan Siwaporn, Kumam Poom
doaj   +1 more source

The Bregman Proximal Average [PDF]

open access: yesSIAM Journal on Optimization, 2021
We provide a proximal average with repect to a 1-coercive Legendre function. In the sense of Bregman distance, the Bregman envelope of the proximal average is a convex combination of Bregman envelopes of individual functions. The Bregman proximal mapping
Xianfu Wang, Heinz H. Bauschke
semanticscholar   +1 more source

Attouch-Théra Duality, Generalized Cycles, and Gap Vectors [PDF]

open access: yesSIAM Journal on Optimization, 2021
Using the Attouch-Théra duality, we study the cycles, gap vectors and fixed point sets of compositions of proximal mappings. Sufficient conditions are given for the existence of cycles and gap vectors.
Salihah Alwadani   +2 more
semanticscholar   +1 more source

𝑚th roots of the identity operator and the geometry conjecture [PDF]

open access: yes, 2021
In this paper, we give three different new proofs of the validity of the geometry conjecture about cycles of projections onto nonempty closed, convex subsets of a Hilbert space.
S. Simons
semanticscholar   +1 more source

A Halpern-type algorithm for a common solution of nonlinear problems in Banach spaces

open access: yesTopological Algebra and its Applications, 2023
In this article, we propose a Halpern-type subgradient extragradient algorithm for solving a common element of the set of solutions of variational inequality problems for continuous monotone mappings and the set of f-fixed points of continuous f ...
Zegeye Habtu, Boikanyo Oganeditse A.
doaj   +1 more source

On the dynamics of grounded shallow ice sheets: Modeling and analysis

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we formulate a model describing the evolution of thickness of a grounded shallow ice sheet. The thickness of the ice sheet is constrained to be nonnegative. This renders the problem under consideration an obstacle problem.
Piersanti Paolo, Temam Roger
doaj   +1 more source

Firmly nonexpansive mappings in classes of geodesic spaces [PDF]

open access: yes, 2012
Firmly nonexpansive mappings play an important role in metric fixed point theory and optimization due to their correspondence with maximal monotone operators.
David Ariza-Ruiz   +2 more
semanticscholar   +1 more source

Solving Composite Fixed Point Problems with Block Updates

open access: yesAdvances in Nonlinear Analysis, 2021
Various strategies are available to construct iteratively a common fixed point of nonexpansive operators by activating only a block of operators at each iteration.
Combettes Patrick L., Glaudin Lilian E.
doaj   +1 more source

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