Embeddability and Stresses of Graphs
组合数学
2008-09-05 v1
摘要
Gluck (1975) has proven that triangulated 2-spheres are generically 3-rigid. Equivalently, planar graphs are generically 3-stress free. We show that linklessly embeddable graphs are generically 4-stress free. Both of these results are corollaries of the following theorem: every K_{r+2}-minor free graph is generically r-stress free for 0<r<5. (This assertion is false for r>5.) We give an equivalent formulation of this theorem in the language of symmetric algebraic shifting and show that its analogue for exterior algebraic shifting also holds. Some further extensions are detailed.
引用
@article{arxiv.math/0411009,
title = {Embeddability and Stresses of Graphs},
author = {Eran Nevo},
journal= {arXiv preprint arXiv:math/0411009},
year = {2008}
}
备注
13 pages, 1 figure