On continuity of Guo Wuwen function
Algebraic Geometry
2014-06-19 v1
Abstract
We show that the functions g and gs introduced by Guo Wuwen in [4] are continuous and semialgebraic. We use this fact to prove that the set Nn of ordered n-tuples of real numbers, realizable by nonnegative matrices, is a closed set.
Keywords
Cite
@article{arxiv.1406.4744,
title = {On continuity of Guo Wuwen function},
author = {Z. Ambroży and I. Biborski},
journal= {arXiv preprint arXiv:1406.4744},
year = {2014}
}