Results 21 to 30 of about 327,794 (206)

Productively Fréchet spaces [PDF]

open access: yes, 2000
summary:We solve the long standing problem of characterizing the class of strongly Fréchet spaces whose product with every strongly Fréchet space is also ...
Jordan, Francis   +5 more
core   +1 more source

Generalized Complex Conformable Derivative and Integral Bases in Fréchet Spaces [PDF]

open access: yesAssiut University Journal of Multidisciplinary Scientific Research
This paper presents an additional approach in the field of polynomial bases, utilizing generalized complex conformable fractional derivative and integral operators. These operators are applied to polynomial bases of complex conformable derivatives (GCCDB)
Gamal Hassan, Ali Sdeek, Amira Atta
doaj   +1 more source

Computing the fréchet derivative of the matrix exponential, with an application to condition number estimation [PDF]

open access: yes, 2008
The matrix exponential is a much-studied matrix function having many applications. The Fréchet derivative of the matrix exponential describes the first-order sensitivity of eA to perturbations in A and its norm determines a condition number for eA. Among
Higham, Nicholas J.   +3 more
core   +1 more source

The complex step approximation to the fréchet derivative of a matrix function [PDF]

open access: yes, 2009
We show that the Fréchet derivative of a matrix function f at A in the direction E, where A and E are real matrices, can be approximated by Im f(A + ihE)/h for some suitably small h. This approximation, requiring a single function evaluation at a complex
Higham, Nicholas J., Al-Mohy, Awad H.
core   +4 more sources

A new convergence theorem for the inexact Newton methods based on assumptions involving the second Fréchet derivative [PDF]

open access: yes, 1999
We provide sufficient conditions for the convergence of inexact Newton methods to a solution of a nonlinear equation in a Banach space. Earlier results have used conditions on the first Fréchet-derivative.
Argyros, I.K.
core   +1 more source

On higher-order adjacent derivative of perturbation map in parametric vector optimization

open access: yesJournal of Inequalities and Applications, 2016
This paper deals with higher-order sensitivity analysis in terms of the higher-order adjacent derivative for nonsmooth vector optimization. The relations between the higher-order adjacent derivative of the minima/the proper minima/the weak minima of a ...
Le Thanh Tung
doaj   +1 more source

Ball convergence for Traub-Steffensen like methods in Banach space

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2015
We present a local convergence analysis for two Traub-Steffensen-like methods in order to approximate a locally unique solution of an equation in a Banach space setting. In earlier studies such as [16, 23] Taylor expansions and hypotheses up to the third
Argyros Ioannis K., George Santhosh
doaj   +1 more source

Computing the fréchet derivative of the matrix logarithm and estimating the condition number [PDF]

open access: yes, 2012
The most popular method for computing the matrix logarithm is the inverse scaling and squaring method, which is the basis of the recent algorithm of Al-Mohy and Higham [SIAM J. Sci. Comput., 34 (2012), pp. C152-C169].
Higham, Nicholas J.   +5 more
core   +1 more source

ON THE FRECHET DIFFERENTIABILITY OF LUXEMBURG NORM IN THE SEQUENCE SPACES l^{p_n} WITH VARIABLE EXPONENTS [PDF]

open access: yesRomanian Journal of Mathematics and Computer Science, 2014
It is shown that the Luxemburg norm in the sequence space l^{(p_n)} with variable exponents is Frechet - differentiable and a formula expressing the Frechet derivative of this norm at any nonzero x ∈ l^{(p_n)} is given.
PAVEL MATEI
doaj  

Fréchet versus strongly Fréchet [PDF]

open access: yes, 2006
We construct under [CH] a Tychonoff pseudocompact Fréchet space and a countably compact Hausdorff Fréchet space which are both not strongly ...
Costantini, C.   +3 more
core   +1 more source

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