3 papers
math.CO2025
Notes on the topology of independence structures
Kevin Ivan Piterman, Volkmar Welker
Following Welsh, a pre-independence space (pi-space) is a set together with a non-empty collection of subsets of , called independent sets, which is closed under taki…
math.GR2025
On reducible Killing forms for groups of Lie type
Kevin Ivan Piterman, Charlotte Roelants
Killing forms on finite groups arise as examples of braided Killing forms on braided Lie algebras. For a finite group and a -stable subset , the Killing form as…
math.CO2023
On the frame complex of symplectic spaces
Kevin Ivan Piterman
For a symplectic space of dimension over , we compute the eigenvalues of its orthogonality graph. This is the simple graph with vertices the -dimensiona…