TY - JOUR
T1 - On Copositive Approximation in Spaces of Continuous Functions II: The Uniqueness of Best Copositive Approximation
JO - Analysis in Theory and Applications
VL - 1
SP - 20
EP - 26
PY - 2016
DA - 2016/01
SN - 32
DO - http://doi.org/10.4208/ata.2016.v32.n1.2
UR - https://global-sci.org/intro/article_detail/ata/4651.html
KW - Strict Chebyshev spaces, best copositive approximation, change of sign.
AB - <p style="text-align: justify;">This paper is part II of &quot;On Copositive Approximation in Spaces of Continuous Functions&quot;. &nbsp;In this paper the author shows that if $Q$ is any compact subset of real numbers, and $M$ is any finite dimensional strict Chebyshev subspace of $C(Q)$, then for any admissible function $f\in C(Q)\backslash M,$ the best copositive approximation to $f$ from $M$ is unique.</p>