On a class of weak Tchebycheff systems

被引：90

作者：

Costantini, P

Lyche, T

Manni, C

机构：

[1] Univ Oslo, Inst Informat, N-0316 Oslo, Norway

[2] Univ Siena, Dipartimento Sci Matemat & Informat, I-53100 Siena, Italy

[3] Univ Oslo, Ctr Math Applicat, N-0316 Oslo, Norway

[4] Univ Roma Tor Vergata, Dipartimento Matemat, I-00133 Rome, Italy

来源：

NUMERISCHE MATHEMATIK | 2005年 / 101卷 / 02期

关键词：

41A15; 41A63; 41A45; 65D07;

D O I：

10.1007/s00211-005-0613-6

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In this paper we study the approximation power, the existence of a normalized B-basis and the structure of a degree-raising process for spaces of the form span < 1, x,..., x(n-2), u( x), v( x) >, requiring suitable assumptions on the functions u and v. The results about degree raising are detailed for special spaces of this form which have been recently introduced in the area of CAGD.

引用

页码：333 / 354

页数：22

共 17 条

[1] TOTALLY POSITIVE MATRICES [J].