6 citations · 24 across the 9 of their papers we have counts for
4 papers · 1 filter
On the automorphism groups of rank-4 primitive coherent configurations
Bohdan Kivva
The minimal degree of a permutation group is the minimum number of points not fixed by non-identity elements of . Lower bounds on the minimal degree have strong structural c…
A characterization of Johnson and Hamming graphs and proof of Babai's conjecture
Bohdan Kivva
One of the central results in the representation theory of distance-regular graphs classifies distance-regular graphs with and second largest eigenvalue . In…
On the spectral gap and the automorphism group of distance-regular graphs
Bohdan Kivva
We prove that a distance-regular graph with a dominant distance is a spectral expander. The key ingredient of the proof is a new inequality on the intersection numbers. We use the…
On the automorphism groups of distance-regular graphs and rank-4 primitive coherent configurations
Bohdan Kivva
The minimal degree of a permutation group is the minimum number of points not fixed by non-identity elements of . Lower bounds on the minimal degree have strong structural c…