Results 31 to 40 of about 5,309,525 (360)
On lower iteration complexity bounds for the convex concave saddle point problems [PDF]
Mathematical programming, 2019 In this paper, we study the lower iteration complexity bounds for finding the saddle point of a strongly convex and strongly concave saddle point problem: minxmaxyF(x,y)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage ...
Junyu Zhang, Mingyi Hong, Shuzhong Zhang
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Loop expansion around the Bethe-Peierls approximation for lattice models [PDF]
, 2005 We develop an effective field theory for lattice models, in which the only non-vanishing diagrams exactly reproduce the topology of the lattice. The Bethe-Peierls approximation appears naturally as the saddle point approximation.
Baxter R J +8 more
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Saddle Pressures Factors in Road and Off-Road Cyclists of Both Genders: A Narrative Review
Journal of Functional Morphology and Kinesiology, 2023 The contact point of the pelvis with the saddle of the bicycle could generate abnormal pressure, which could lead to injuries to the perineum in cyclists.
Domenico Savio Salvatore Vicari +6 more
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Saddle point inflation from f(R) theory
Physics Letters B, 2015 We analyse several saddle point inflationary scenarios based on power-law f(R) models. We investigate inflation resulting from f(R)=R+αnM2(1−n)Rn+αn+1M−2nRn+1 and f(R)=∑nlαnM2(1−n)Rn as well as l→∞ limit of the latter. In all cases we have found relation
Michał Artymowski +2 more
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A new generalized shift-splitting method for nonsymmetric saddle point problems
Advances in Mechanical Engineering, 2022 Recently, Huang and Huang [ Journal of Computational and Applied Mathematics , 328 (2018) 381–399] proposed a modified generalized shift-splitting preconditioned (denoted by MGSSP) method for solving large sparse saddle point problems, and gave the ...
Tao Wei, Li-Tao Zhang
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Algebraic multigrid methods for saddle point systems arising from mortar contact formulations [PDF]
International Journal for Numerical Methods in Engineering, 2019 In this article, a fully aggregation‐based algebraic multigrid strategy is developed for nonlinear contact problems of saddle point type using a mortar finite element approach.
T. Wiesner +4 more
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A Theoretical Framework for Lagrangian Descriptors [PDF]
, 2017 This paper provides a theoretical background for Lagrangian Descriptors (LDs). The goal of achieving rigourous proofs that justify the ability of LDs to detect invariant manifolds is simplified by introducing an alternative definition for LDs.
Balibrea-Iniesta, Francisco +4 more
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Numerical Resolution of Fluid Dynamic Problems Using a Saddle Point Variational Formulation
Chemical Engineering Transactions, 2019 Variational methods are useful for finding numerical solutions of differential equations, which are the corresponding Euler-Lagrange equations to the stationary condition of the functional. Usually the functional is a maximum or a minimum with respect to
Reginaldo Guirardello
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The construction of one unstable manifold for the dissipative Henon mapping [PDF]
, 1984 The unstable manifold of a saddle point of the Henon mapping is constructed analytically via a contraction mapping, for a range of parameter values where the second fixed point is a stable node.
Valkering, Theo
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Mathematical Modelling and Analysis, 2022 A new variational approach for a boundary value problem in mathematical physics is proposed. By considering two-field Lagrange multipliers, we deliver a variational formulation consisting of a mixed variational problem which is equivalent with a saddle ...
Mariana Chivu Cojocaru, Andaluzia Matei
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