Presentations

ICERM Matroids, Rigidity, and Algebraic Statistics Workshop (Mar 17 - 21, 2025), An Exterior Algebra Valued Tutte Function on Linear Matroid Pairs Lightning Talk (Transcript includes abstract, slides and speech script) Transcript (background)

The background about electrical networks and oriented matroids is discussed in Oriented matroid pairs, theory and an electric application, in Matroid theory (Seattle, WA, 1995), volume 197 of Contemp. Math., pages 313–331. Amer. Math. Soc., Providence, RI, 1996. Article

Discrete Math Day at Smith College (May 2023) An Exterior Algebra Valued Tutte Function on Linear Matroids or their Pairs, poster

AMS Regional Meeting, Binghamton (Oct. 13, 2019), Restricted or Ported Tutte Decomposion and Analogs of All-Minors Laplacian Expansions (accumulated corrections, additions, revisions) slides abstract

Resistive Networks, Linear Spaces and Tutte Polynomials for Systems of Lines: Applications of Algebraic Combinatorics Workshop Worcester Polytechnic Institute (August 14, 2015) slides

Ported or Relative Oriented Matroids and Electric Circuits (March 2, 2015) slides

An Extensor Tree Theorem and a Tutte Identity for Graphs with Distinguished Port Edges, at the workshop on Combinatorial Identities and their Applications in Statistical Mechanics CSMW03, Isaac Newton Institute (April 7-11 2008) slides)