Cofactor matroids and abstract rigidity

Abstract: We verify a conjecture of Walter Whiteley from 1996 that the C^1_2-cofactor matroid is the unique maximal abstract 3-rigidity matroid. We then use this result to obtain a good chara

combinatorics

Audience: researchers in the topic

( paper )

Virtual seminar on algebraic matroids and rigidity theory

Series comments: The COVID-19 pandemic is forcing us all to stay home, foregoing conferences and departmental seminars for the next few months. This weekly virtual seminar is an attempt to patch that departmental-seminar-sized void in our lives until it is safe to resume our more traditional forms of professional networking. Since geographic location matters a lot less for a virtual seminar than for an in-person seminar, this virtual seminar will be defined purely by its mathematical theme, algebraic matroids and rigidity theory, and not any particular department nor region.