2025/02/26 by Amaury Freslon, Freslon, Amaury, Paul Meunier +3
Mathematics · Computer Science · #Advanced Operator Algebra Research #Quantum Computing Algorithms and Architecture #Rings, Modules, and Algebras
paper · pdf · doi:10.48550/arxiv.2502.19343
We prove that for every pair of quantum isomorphic graphs, their block trees and their block graphs are isomorphic, and that such an isomorphism can be chosen so that the corresponding blocks are quantum isomorphic -- in particular, 2-connectedness is preserved under quantum isomorphism. We conclude with some corollaries, including obtaining some necessary conditions on a pair of quantum isomorphic, not isomorphic graphs with a minimal number of vertices.