Some stumbling first steps towards linear homology in a nutshell
Abstract
In 1985 Bayer and Billera defined a flag vector for every convex polytope , and proved some fundamental properties. The flag vectors span a graded ring . Here is the span of the with . It has dimension the Fibonacci number . This paper introduces and explores the conjecture, that has a counting basis . If true then the equation conjecturally provides a formula for the Betti numbers of a new homology theory. As the are linear functions of , we call the new theory linear homology. Further, assuming the conjecture each will have a rank . The rank zero part of linear homology will be (middle perversity) intersection homology. The higher rank measure successively more complicated singularities. In dimension we will have linearly independent Betti numbers. This paper produces a basis for , that is conjecturally a counting basis. Warning: Conjecture withdrawn in version 2.
Keywords
Cite
@article{arxiv.1908.00039,
title = {Some stumbling first steps towards linear homology in a nutshell},
author = {Jonathan Fine},
journal= {arXiv preprint arXiv:1908.00039},
year = {2021}
}
Comments
LaTeX, 22 pages, no figures