Results 41 to 50 of about 5,309,525 (360)
Valley Singularities and Baryon Number Violation [PDF]
, 1993 We consider the valley--method computation of the inclusive cross section of baryon number violating processes in the Standard Model. We show that any physically correct model of the valley action should present a singularity in the saddle point valley ...
Arnold +11 more
core +1 more source
Mathematical analysis for classical Chua's circuit with two nonlinear resistors [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2020 We formulate a mathematical model for the classical Chua’s circuit with two nonlinear resistors in terms of a system of nonlinear ordinary differential equations.
Natchaphon Limphodaen +1 more
doaj +1 more source
Saddle point inflation in string-inspired theory [PDF]
, 2015 The observed value of the Higgs mass indicates the possibility that there is no supersymmetry below the Planck scale and that the Higgs can play the role of the inflaton.
Hamada, Yuta +2 more
core +2 more sources
A parameterized shift-splitting preconditioner for saddle point problems
Mathematical Biosciences and Engineering, 2019 Recently, Chen and Ma [A generalized shift-splitting preconditioner for saddle point problems, Applied Mathematics Letters, 43 (2015) 49-55] introduced a generalized shift-splitting preconditioner for saddle point problems with symmetric positive ...
Li-Tao Zhang , Chao-Qian Li, Yao-Tang Li
doaj +1 more source
On semidifferentiable interval-valued programming problems
Journal of Inequalities and Applications, 2021 In this paper, we consider the semidifferentiable case of an interval-valued minimization problem and establish sufficient optimality conditions and Wolfe type as well as Mond–Weir type duality theorems under semilocal E-preinvex functions.
Kin Keung Lai +2 more
doaj +1 more source
Three effective preconditioners for double saddle point problem
AIMS Mathematics, 2021 In this paper, we mainly propose three preconditioners for solving double saddle point problems, which arise from some practical problems. Firstly, the solvability of this kind of problem is investigated under suitable assumption. Next, we prove that all
Yuwen He, Jun Li, Lingsheng Meng
doaj +1 more source
On replica-nondiagonal large N saddles in the SYK model
EPJ Web of Conferences, 2018 We study the saddle points of the SYK model, formulated in terms of the replica bilocal fields, beyond the replica-diagonal assumption. We find a family of replica-nondiagonal saddle points in the IR limit, where the saddle point equations are separable.
Aref’eva Irina +3 more
doaj +1 more source
Existence Solution for a Non-smooth System [PDF]
Mathematics Interdisciplinary ResearchA variational method for a mixed boundary value problem in mathematical physics is considered. Using two-field Lagrange multipliers, we would investigate a variational formulation containing a mixed variational problem which is equivalent with a ...
Maisam Alizadeh +2 more
doaj +1 more source
Phase retrieval and saddle-point optimization
, 2007 Iterative algorithms with feedback are amongst the most powerful and versatile optimization methods for phase retrieval. Among these, the hybrid input-output algorithm has demonstrated practical solutions to giga-element nonlinear phase retrieval ...
Bauschke +25 more
core +1 more source
On Uzawa-SSI method for non-Hermitian saddle point problems
AIMS Mathematics, 2020 Based on the single-step iteration (SSI) method for the non-Hermitian positive definite linear systems, we propose a Uzawa-SSI method for solving the saddle point problems with non-Hermitian positive definite (1, 1) block in this paper.
Shu-Xin Miao, Jing Zhang
doaj +1 more source