Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Kazuaki Kitahara"'
Autor:
Kazuaki Kitahara
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 38, Iss 2 (2009)
Let \(\{u_0, \dots, u_n\}\) be a quasi Descartes system of \(C[a, b]\) and \(p\) a positive number with \(1 < p < \infty\) or \(\infty\). In this note, we search for an \(m (\leqq n)\) dimensional subspace that possesses the least distance from \(u_n
Externí odkaz:
https://doaj.org/article/25d65d2a00e149e4b5cffe0157891eea
Autor:
Kazuaki Kitahara, Shiki Harada
Publikováno v:
Applied Mathematical Sciences. 17:355-361
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3c6eeb5058cbf1dc058726ee8daffda
https://doi.org/10.12988/ams.2023.917397
https://doi.org/10.12988/ams.2023.917397
Publikováno v:
Applied Mathematical Sciences. 11:3017-3032
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea6659fb845de4a5d94b6d628c0d1e83
https://doi.org/10.12988/ams.2017.711302
https://doi.org/10.12988/ams.2017.711302
Autor:
Kazuaki Kitahara, Taka Aki Okuno
Publikováno v:
International Journal of Modeling and Optimization. 4:287-291
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f5e5b3706d3c6ba3af6ad3a4b91ec53
https://doi.org/10.7763/ijmo.2014.v4.387
https://doi.org/10.7763/ijmo.2014.v4.387
Autor:
Kazuaki Kitahara
Publikováno v:
Analysis in Theory and Applications. 26:7-12
In this note, we seek for functions f which are approximated by the sequence of interpolation polynomials of f obtained by any prescribed system of nodes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1affdba211db648652f3dbcccd761db
https://doi.org/10.1007/s10496-010-0007-1
https://doi.org/10.1007/s10496-010-0007-1
Autor:
Kazuaki Kitahara, Toshinao Okada
Publikováno v:
Approximation Theory and Its Applications. 17:86-100
If a vector-valued function space with a Hausdorff locally convex topology has a property such that every closed strongly bounded subset is compact, then we name this property Helly's property. In this paper, we show a class of vector-valued function
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b7514fe43bdeeff721016394669fdd0
https://doi.org/10.1023/a:1015596717617
https://doi.org/10.1023/a:1015596717617
Autor:
Kazuaki Kitahara, Ken-ichi Kuri
Publikováno v:
Numerical Functional Analysis and Optimization. 21:465-470
The purpose of this note is to give an extension of one of Jackson's theorems tomultivariables.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f03608127fdf955d3c0d81256bb78d58
https://doi.org/10.1080/01630560008816966
https://doi.org/10.1080/01630560008816966
Publikováno v:
International Journal of Pure and Apllied Mathematics. 86
If a function is analytic on an interval, then the function is expressed as the Taylor expansion about a point in the interval. Furthermore, possibility of Taylor expansions of functions about two or three points has also been studying as useful expr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8193d86f6f830b7ca84bb884cfff58f5
https://doi.org/10.12732/ijpam.v86i1.7
https://doi.org/10.12732/ijpam.v86i1.7
Publikováno v:
Applied Mathematics Letters. 9(4):9-14
There are many investigations of Lagrange interpolation operators. In this paper, we study norms of Hermite interpolation operators on some function spaces.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a9e05b17cd30a41f11c2fa106997eb8
Autor:
A. Nishi, Kazuaki Kitahara
Publikováno v:
Journal of Mathematical Analysis and Applications. 172:166-178
Let ( E , || · ||) be an ordered Banach space over the real held. Let BV be the space of all E -valued functions on a compact interval [ a , b ] ⊂ R which are of bounded variation. When BV is endowed with a norm || f || v = || f ( a )|| + v ( f ),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9569615b025b8fbad617bd62173b4983
https://doi.org/10.1006/jmaa.1993.1014
https://doi.org/10.1006/jmaa.1993.1014