64 citations · 346 across the 53 of their papers we have counts for
6 papers · 1 filter
Quasirandom groups enjoy interleaved mixing
Harm Derksen, Emanuele Viola
Let be a group such that any non-trivial representation has dimension at least . Let and be distributions over…
The Graph Isomorphism Problem and approximate categories
Harm Derksen
It is unknown whether two graphs can be tested for isomorphism in polynomial time. A classical approach to the Graph Isomorphism Problem is the d-dimensional Weisfeiler-Lehman algo…
Valuative invariants for polymatroids
Harm Derksen, Alex Fink
Many important invariants for matroids and polymatroids, such as the Tutte polynomial, the Billera-Jia-Reiner quasi-symmetric function, and the invariant introduced by…
New Graphs of Finite Mutation Type
Harm Derksen, Theodore Owen
To a directed graph without loops and 2-cycles, we can associate a skew-symmetric matrix with integer entries. Mutations of such skew-symmetric matrices, and more generally skew-sy…
Symmetric and Quasi-Symmetric Functions associated to Polymatroids
Harm Derksen
To every subspace arrangement X we will associate symmetric functions P[X] and H[X]. These symmetric functions encode the Hilbert series and the minimal projective resolution of th…
Error correcting codes and B_h-sequences
Harm Derksen
We construct error correcting nonlinear binary codes using a construction of Bose and Chowla in additive number theory. Our method extends a construction of Graham and Sloane for c…