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math.CO2023
Eigenvalue Bounds for Sum-Rank-Metric Codes
Aida Abiad, Antonina P. Khramova, Alberto Ravagnani
We consider the problem of deriving upper bounds on the parameters of sum-rank-metric codes, with focus on their dimension and block length. The sum-rank metric is a combination of…
math.CO2023★ 1 cited
A switching method for constructing cospectral gain graphs
Aida Abiad, Francesco Belardo, Antonina P. Khramova
A gain graph over a group , also referred to as -gain graph, is a graph where an element of a group , called gain, is assigned to each oriented edge, in such a way that th…