搜索结果: 1-11 共查到“应用数学 Gradient”相关记录11条 . 查询时间(0.091 秒)
In this paper, we establish a Bochner type formula on Alexandrov spaces with Ricci curvature
bounded below. Yau’s gradient estimates for harmonic functions is also obtained on Alexandrov
spaces.
On gradient estimates for a nonlinear parabolic equation on Riemannian manifolds
Nonlinear parabolic equations Gradient estimates
2010/9/25
Let (M,g) be a complete noncompact Riemannian manifold. In this note, we derive a local gradient estimate for positive solution to a simple nonlinear parabolic equation
A gradient descent solution to the Monge-Kantorovich problem
Monge-Kantorovich problem optimal transport
2010/9/13
We present a new, simple, and elegant algorithm for computing the optimal mapping for the Monge-Kantorovich problem with quadratic cost. The method arises from a reformulation of the dual problem into...
Commentary about the paper "Continuum Mech. Thermodyn. (2010) 22:163-176" by Podio Guidugli and Vianello and some related papers on higher gradient theories
Podio Guidugli and Vianello some related papers higher gradient theories
2010/12/14
In this commentary we try to make clearer the state of the art concerning the relation between mechanical contact interactions and the di¤erent notions of stresses.
Almost sure convergence and in quadratic mean of the gradient stochastic process for the sequential estimation of a conditional expectation
Stochastic approximation Conditional expectation
2010/9/10
In this work, we present results of Almost Sure Convergence and in Quadratic Mean of the gradient stochastic process for the sequential estimation of a conditional expectation.
This work is motived b...
The best gradient approximation to an observed function
gradient operator best approximation Sobolev spaces
2010/9/13
We wish to find the potential function whose gradient best approximates an observed square integrable function. With an appropriate choice of topology we show that the gradient operator is a bounded l...
Some applications of stochastic gradient processes
Stochastic approximation conditional expectation
2010/9/13
We consider a stochastic gradient process, which is used for the estimation of a conditional expectation : Xn+1 = Xn−an∇xφ(Vn,Xn)(φ(Vn,Xn)−Un). We give one theorem of almost sure con...
The second gradient operator and integral theorems for tensor fields on curved surfaces
The second gradient operator integral theorems tensor fields
2010/9/15
On the basis of the second gradient operator defined on curved surfaces,the second category of integral theorems for tensor fields, including the second divergence theorems, the second gradient theore...
A gradient recovery-based a posteriori error estimators for the Ciarlet - Raviart formulation of the second biharmonic equations
the second biharmonic problem weighted Cle′ment -type interpolation
2010/9/15
This paper proposes a posteriori error estimators of gradient recovery type for the Ciarlet-Raviart formulation of the second biharmonic equations. By the appropriate modification of weighted Cle men′...
A Restarted Conjugate Gradient Method for Ill-posed Problems
Ill-posed problems restarted CG damped discrepancy principle
2007/12/11
This paper presents a restarted conjugate gradient iterative algorithm for solving ill-posed problems. The damped Morozov's discrepancy principle is used as a stopping rule. Numerical experiments are ...
Two Armijo-type line searches are proposed in this paper for nonlinear conjugate gradient methods. Under these line searches, global convergence results are established for several famous conjugate gr...