Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Ambikeshwar Sharma"'
Autor:
Ambikeshwar Sharma, Marcel G. de Bruin
Publikováno v:
Computational Methods and Function Theory. 3:305-323
Hermite-Birkhoff interpolation and Pal-type interpolation have been receiving much attention over the years. Also during the previous 15 years the subject of interpolation in non-uniformly distributed nodes has been looked into. There are, however, n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c37d018b5a639a5c1548d7e8b2c5a3b9
https://doi.org/10.1007/bf03321040
https://doi.org/10.1007/bf03321040
Autor:
Marcel G. de Bruin, Ambikeshwar Sharma
Publikováno v:
Journal of Computational and Applied Mathematics. 133(1-2):295-303
In this paper regularity of the (0,1,…,r−2,r) Birkhoff interpolation problem (r⩾2) on the zeros of (z3n+1)(z3−1) is proved.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::134876e40ab70d1788cbab0c0eb0d323
Publikováno v:
Numerical Algorithms. 25:47-62
We consider the regularity of Birkhoff interpolation on some non-uniformly distributed roots of unity. We determine the range of values of ξ in the complex plane which makes the problem of lacunary interpolation on the zeros of (z n +1)(z−ξ) regu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35767cc42cf6d033f1512920b7af817e
https://doi.org/10.1023/a:1016658419067
https://doi.org/10.1023/a:1016658419067
Autor:
Z. Ziegler, Ambikeshwar Sharma
Publikováno v:
Analysis. 19:1-12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ade04e349979c4f2aeb17124d88c916c
https://doi.org/10.1524/anly.1999.19.1.1
https://doi.org/10.1524/anly.1999.19.1.1
Publikováno v:
Proceedings of the American Mathematical Society. 126:729-737
This paper studies the spectrum of continuous refinement operators and relates their spectral properties with the solutions of the corresponding continuous refinement equations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95ff66a21efe7f90b7395aa7ee5dff1b
https://doi.org/10.1090/s0002-9939-98-04006-4
https://doi.org/10.1090/s0002-9939-98-04006-4
Autor:
W. Chen, Ambikeshwar Sharma
Publikováno v:
Methods and Applications of Analysis. 4:239-249
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa33ac12c5a6400e5c92058b79f19eeb
https://doi.org/10.4310/maa.1997.v4.n3.a1
https://doi.org/10.4310/maa.1997.v4.n3.a1
Autor:
Ambikeshwar Sharma, Marcel G. de Bruin
Publikováno v:
ESAIM: Mathematical Modelling and Numerical Analysis. 29:477-503
Dans plusieurs articles un resultat de J. L. Walsh sur equiconvergence des polynomes d'interpolation sur les racines d'unite des fonctions analytiques est generalise par des methodes d'analyse complexe au cas d'interpolation rationnelle des fonctions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ede7d11a6f6304dcc56916f8dad7dda
https://doi.org/10.1051/m2an/1995290404771
https://doi.org/10.1051/m2an/1995290404771
Publikováno v:
Analysis. 12:271-302
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c48fd55f02a14e9ca4d7afb011b046b
https://doi.org/10.1524/anly.1992.12.34.271
https://doi.org/10.1524/anly.1992.12.34.271
Autor:
Ambikeshwar Sharma, M. A. Bokhari
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 15, Iss 2, Pp 221-228 (1992)
The phenomenon of equiconvergence was first observed by Walsh for two sequences of polynomial interpolants to a class of functions. Here we obtain analogues of Yuanren's results for Walsh equiconvergence using rational functions as in Saff and Sharma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4193d4583eda22e674cd7582474809fe
https://doi.org/10.1155/s0161171292000280
https://doi.org/10.1155/s0161171292000280
Autor:
Ambikeshwar Sharma, Kamen G. Ivanov
Publikováno v:
Constructive Approximation. 7:315-327
Here we study some simple properties of (l, p) distinguished points for functions in the classA p (p>1) in the context of Walsh equiconvergence. We give a condition which is necessary and sufficient for a set Z of points in C to be an (l, p) distingu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c699259f934facb45c6ed84aedca36d9
https://doi.org/10.1007/bf01888160
https://doi.org/10.1007/bf01888160