Results 71 to 80 of about 194 (164)

Weighted Weierstrass' theorem with first derivatives [PDF]

open access: yes, 2007
32 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.MR#: MR2338656 (2008g:41004)Zbl#: Zbl pre05173014We characterize the set of functions which can be approximated by continuous functions with the norm $\ \ {L infty(w)}$ for every weight w.
Tourís, Eva   +3 more
core   +1 more source

Shapiro’s problem on polynomials with large partial sums of coefficients

open access: yesForum of Mathematics, Sigma
Given a polynomial $\sum _\nu a_\nu X^\nu $ of degree $
Marc Technau
doaj   +1 more source

© Hindawi Publishing Corp. ON THE CONVERGENCE PROPERTIES OF BASIC SERIES REPRESENTING CLIFFORD VALUED FUNCTIONS

open access: yes, 2002
It is shown that certain classes of special monogenic functions cannot be repre-sented by the basic series in the whole space. New definitions for the order of basis of special monogenic polynomials are given, together with theorems on the representation
M. A. Abul-ez, D. Constales
core  

Generalized weighted Sobolev spaces and applications to Sobolev orthogonal polynomials, II [PDF]

open access: yes, 2002
32 pages, no figures.-- MSC1987 codes: 41A10, 46E35, 46G10.-- Part I of this paper published in: Acta Appl. Math. 80(3): 273-308 (2004), available at: http://e-archivo.uc3m.es/handle/10016/6482MR#: MR1928169 (2003h:42034)Zbl#: Zbl 1095.42014^aWe present ...
José M. Rodríguez   +7 more
core   +1 more source

Generalized weighted Sobolev spaces and applications to Sobolev orthogonal polynomials: a survey [PDF]

open access: yes, 2006
6 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.MR#: MR2219917 (2006k:42051)Zbl#: Zbl 1146.42005In this paper we present a definition of Sobolev spaces with respect to general measures, prove some useful technical results, some of them ...
Pestana, Domingo   +3 more
core   +2 more sources

Univariate right fractional polynomial high order monotone approximation

open access: yesDemonstratio Mathematica, 2016
Let f ∈ Cr([−1,1]), r ≥ 0 and let L* be a linear right fractional differential operator such that L*(f) ≥ 0 throughout [−1,0]. We can find a sequence of polynomials Qn of degree ≤ n such that L*(Qn) ≥ 0 over [−1,0], furthermore f is approximated right ...
Anastassiou George A.
doaj   +1 more source

Overiteration of d-variate tensor product Bernstein operators: A quantitative result (Dedicated to the memory of Professor Sorin Gal)

open access: yes
Extending an earlier estimate for the degree of approximation of over iterated univariate Bernstein operators towards the same operator of degree one, it is shown that an analogous result holds in the d-variate case.
ACU, Ana-Maria, GONSKA, Heiner
core   +1 more source

A real variable characterization of Gromov hyperbolicity of flute surfaces [PDF]

open access: yes, 2008
23 pages, 1 figure.-- MSC2000 codes: 41A10, 46E35, 46G10.-- ArXiv pre-print available at: http://arxiv.org/abs/0806.0093Previously presented as Communication at International Congress of Mathematicians 2006 (ICM2006, Madrid, Spain, Aug 22-30, 2006 ...
Tourís, Eva   +2 more
core   +2 more sources

Improving user verification in human-robot interaction from audio or image inputs through sample quality assessment

open access: yes, 2021
In this paper, we tackle the task of improving biometric verification in the context of Human-Robot Interaction (HRI). A robot that wants to identify a specific person to provide a service can do so by either image verification or, if light conditions ...
Lorenzo Navarro, José Javier   +11 more
core   +1 more source

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