3 papers
math.OA2026
Unification of Quantum Graph Properties
Gian Luca Spitzer
Many properties of classical graphs are defined in terms of subsets of the vertex set. Examples include connected components, which are subsets such that $X \tim…
math.OA2026
Quantum Graph Theory by Example
Gian Luca Spitzer, Ion Nechita
Quantum graphs have been introduced by Duan, Severini, and Winter to describe the zero-error behaviour of quantum channels. Since then, quantum graph theory has become a field of s…
quant-ph2025
Homomorphism Indistinguishability Relations induced by Quantum Groups
Tim Seppelt, Gian Luca Spitzer
Homomorphism indistinguishability is a way of characterising many natural equivalence relations on graphs. Two graphs and are called homomorphism indistinguishable over a g…