2 papers
cs.SC2009
The weighted difference substitutions and Nonnegativity Decision of Forms
Xiaorong Hou, Song Xu, Junwei Shao
In this paper, we study the weighted difference substitutions from geometrical views. First, we give the geometric meanings of the weighted difference substitutions, and introduce…
cs.SC2009
Simplex Subdivisions and Nonnegativity Decision of Forms
Xiaorong Hou, Song Xu
This paper mainly studies nonnegativity decision of forms based on variable substitutions. Unlike existing research, the paper regards simplex subdivisions as new perspectives to s…