3 papers
math.QA2026
A multigraph approach to confusability in quantum channels
Sk Asfaq Hossain, Angshuman Bhattacharya
We introduce a new approach to confusability in a quantum channel, namely quantum confusability multigraph, which incorporates the output information into the graphical structure.…
math.QA2024
Quantum symmetry in multigraphs (part II)
Debashish Goswami, Sk Asfaq Hossain
This article is a continuation of "Quantum symmetry in multigraphs (part I)". In this article, we give an explicit construction of a non-Bichon type co-action on a multigraph that…
math.QA2023
Quantum symmetry in multigraphs (part I)
Debashish Goswami, Sk Asfaq Hossain
We introduce various notions of quantum symmetry in a directed or undirected multigraph with no isolated vertex and explore relations among them. If the multigraph is single edged…