Results 101 to 110 of about 4,846,198 (334)

Saddle point least squares for the reaction–diffusion problem

open access: yesResults in Applied Mathematics, 2020
We consider a mixed variational formulation for the reaction–diffusion problem based on a saddle point least square approach with an optimal test norm and nonconforming trial spaces.
Constantin Bacuta, Jacob Jacavage
doaj  

Accelerated variance-reduced methods for saddle-point problems

open access: yesEURO Journal on Computational Optimization, 2022
We consider composite minimax optimization problems where the goal is to find a saddle-point of a large sum of non-bilinear objective functions augmented by simple composite regularizers for the primal and dual variables.
Ekaterina Borodich   +5 more
doaj  

Convergence of approximate saddle points

open access: yesJournal of Mathematical Analysis and Applications, 1989
AbstractRelationships between convergence properties of a family of extended real valued functions and convergence properties of the family of the sets of their (approximate or exact) saddle points are investigated. The use of Γ-limits on convergence spaces enables us to refine several theorems and to get entirely new results (i.e., on the convergence ...
openaire   +2 more sources

Critical points when there is no saddle point geometry [PDF]

open access: yesTopological Methods in Nonlinear Analysis, 1995
We show how mountain pass methods can be used even when there is no mountain pass or saddle point geometry. The functional can grow on linking subsets. Applications are given.
openaire   +3 more sources

The Saddle-Point Method and the Li Coefficients [PDF]

open access: yesCanadian Mathematical Bulletin, 2011
AbstractIn this paper, we apply the saddle-point method in conjunction with the theory of the Nörlund–Rice integrals to derive precise asymptotic formula for the generalized Li coefficients established by Omar and Mazhouda. Actually, for any functionFin the Selberg classand under the Generalized Riemann Hypothesis, we havewithwhere γ is the Euler's ...
openaire   +3 more sources

Dynamical Behaviour of a Time Delay Model of the ERK and STAT5 Interaction [PDF]

open access: yesBioautomation, 2007
In this paper we have done sensitive analysis of a time delay model which describes the ERK and STAT5 interaction. The results show that the type of the equilibrium point of the model can be a compound saddle-focus or a compound saddle-knot.
Kotev V.
doaj  

Inflation and reheating predictions in polynomial inflation with small and large fields

open access: yesPhysics Letters B
We explore the inflationary dynamics and reheating predictions of the fourth-order generalized polynomial inflation model featuring adjustable saddle-point position and flatness near the saddle point for both small and large field cases, based on the ...
Feng-Yi Zhang, Wenbin Lin
doaj  

Nonlinear dynamics of turbulent waves in fluids and plasmas [PDF]

open access: yesNonlinear Processes in Geophysics, 2005
In a model drift wave system that is interesting both in fluids and plasmas, we find that an embedded moving saddle point plays an important role at the onset of turbulence.
K. He, A. C.-L. Chian
doaj  

Uzawa type algorithms for nonsymmetric saddle point problems [PDF]

open access: bronze, 1999
James H. Bramble   +2 more
openalex   +1 more source

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