Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Reinaldo Martínez-Cruz"'
Publikováno v:
Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI. 9:47-55
En este trabajo, basado sobre los conceptos de ultramétrica y b-métrica extendida, introducimos dos nuevas familias de funciones, aquellas que preservan la ultramétrica débil (UD) y las que preservan la b-métrica extendida (BE). Se investigan al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff97ba0a603ac11b9bcb370bcfbbc622
https://doi.org/10.29057/icbi.v9i18.7128
https://doi.org/10.29057/icbi.v9i18.7128
Publikováno v:
Journal of Approximation Theory. 198:10-23
We find the polynomials of the best one-sided approximation to a step function on - 1 , 1 . We prove that these polynomials are obtained by Hermite interpolation at the zeros of some quasi orthogonal Jacobi polynomials. We discuss the cases when ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f124a4a5445b0c94ce5963fedcbcf0
https://doi.org/10.1016/j.jat.2015.05.001
https://doi.org/10.1016/j.jat.2015.05.001
Publikováno v:
Calcolo. 51:319-328
For a given $$\theta \in (a,b)$$ , we investigate the question whether there exists a positive quadrature formula with maximal degree of precision which has the prescribed abscissa $$\theta $$ plus possibly $$a$$ and/or $$b$$ , the endpoints of the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ecd4e264080e56b2e5eeaeee26bad89
https://doi.org/10.1007/s10092-013-0087-3
https://doi.org/10.1007/s10092-013-0087-3
Publikováno v:
Journal of Mathematical Analysis and Applications. 393:517-525
We present some operators for one-sided approximation of differentiable functions by algebraic polynomials in L p spaces. The estimates for the error of approximation are given with an explicit constant.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68aa499303bebfc069b032db080261f7
https://doi.org/10.1016/j.jmaa.2012.04.007
https://doi.org/10.1016/j.jmaa.2012.04.007
Publikováno v:
Journal of Approximation Theory. 164:791-802
We find the polynomials of the best one-sided approximation to the Heaviside and sign functions. The polynomials are obtained by Hermite interpolation at the zeros of some Jacobi polynomials. Also we give an estimate of the error of approximation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1544535c5c424be223bb64ba40cbc135
https://doi.org/10.1016/j.jat.2012.02.006
https://doi.org/10.1016/j.jat.2012.02.006