Results 11 to 20 of about 51,215 (304)
On the Recursive Saddle Point Method [PDF]
SSRN Electronic Journal, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MESSNER, MATTHIAS, PAVONI, NICOLA
openaire +6 more sources
Hillclimbing saddle point inflation [PDF]
Physics Letters B, 2018 Recently a new inflationary scenario was proposed in [1] which can be applicable to an inflaton having multiple vacua. In this letter, we consider a more general situation where the inflaton potential has a (UV) saddle point around the Planck scale. This
Kiyoharu Kawana, Katsuta Sakai
doaj +3 more sources
The Antitriangular Factorization of Saddle Point Matrices [PDF]
SIAM Journal on Matrix Analysis and Applications, 2014 Mastronardi and Van Dooren [SIAM J. Matrix Anal. Appl., 34 (2013), pp. 173--196] recently introduced the block antitriangular (``Batman'') decomposition for symmetric indefinite matrices. Here we show the simplification of this factorization for saddle point matrices and demonstrate how it represents the common nullspace method.
Pestana, Jennifer, Wathen, Andrew
openaire +7 more sources
Refined saddle-point preconditioners for discretized Stokes problems. [PDF]
Numer Math (Heidelb), 2018 This paper is concerned with the implementation of efficient solution algorithms for elliptic problems with constraints. We establish theory which shows that including a simple scaling within well-established block diagonal preconditioners for Stokes ...
Pearson JW, Pestana J, Silvester DJ.
europepmc +3 more sources
Sella, an open-source automation-friendly molecular saddle point optimizer [PDF]
, 2022 We present a new algorithm for the optimization of molecular structures to saddle points on the potential energy surface using a redundant internal coordinate system.
Khachik, Sargsyan +3 more
core +1 more source
Stochastic Saddle-Point Optimization for the Wasserstein Barycenter Problem [PDF]
, 2022 We consider the population Wasserstein barycenter problem for random probability measures supported on a finite set of points and generated by an online stream of data.
Dvurechensky, Pavel +2 more
core +1 more source
Saddle point least squares and Petrov-Galerkin methods applied to reaction-diffusion and convection-diffusion equations [PDF]
, 2023 Bacuta, ConstantinWe present new results on both saddle point least-squares and Petrov-Galerkin methods applied to reaction-diffusion and convection-diffusion equations.
Hayes, Daniel
core +1 more source
Exact QFT duals of AdS black holes
Journal of High Energy Physics, 2023 We construct large N saddle points of the matrix model for the N $$ \mathcal{N} $$ = 4 Yang- Mills index dual to the BPS black holes in AdS 5 × S 5, in two different setups.
Sunjin Choi +3 more
doaj +1 more source
Axioms, 2023 This paper is devoted to the investigation of optimality conditions and saddle point theorems for robust approximate quasi-weak efficient solutions for a nonsmooth uncertain multiobjective fractional semi-infinite optimization problem (NUMFP). Firstly, a
Liu Gao, Guolin Yu, Wenyan Han
doaj +1 more source
Leakage threshold of a saddle point
Tribology Letters, 2022 Abstract The threshold condition for leakage inception is of great interest to many engineering applications, and it is essential for seal design. In the current study, the leakage threshold is studied by means of a numerical method for a mechanical contact problem between an elastic bisinusoidal surface and a rigid flat surface.
Huang, De +3 more
openaire +2 more sources