Zeev Dvir

collaborators

3 papers

math.CO2026

Rank of incidence matrices over integers modulo a prime power

Zeev Dvir

In this note we prove an upper bound on the $F_{p}$ -rank of the incidence matrix of points and hyperplanes in $(Z / p^{k} Z)^{n}$ , improving a recent bound of Laba…

math.GR2025

Rank-metric separation in irreducible representations of finite groups

Zeev Dvir

We give a general lower bound on the rank of matrices of the form $I ¨ (h) - I$ with $I ¨ : G \to G L (F^{n})$ an irreducible representation of a finite group $G$ . The ma…

math.CO2025

Tensor rank and dimension expanders

Zeev Dvir

We prove a lower bound on the rank of tensors constructed from families of linear maps that `expand' the dimension of every subspace. Such families, called {\em dimension expanders…