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math.CO2025
Spectral properties of distance Laplacian matrices of complex unit gain graphs
Aniruddha Samanta, Deepshikha
A complex unit gain graph (-gain graph), is a graph where the function assigns a unit complex number to each orientation of an edge of , and…
math.CO2024
Unifying adjacency, Laplacian, and signless Laplacian theories
Aniruddha Samanta, Deepshikha, Kinkar Chandra Das
Let be a simple graph with associated diagonal matrix of vertex degrees , adjacency matrix , Laplacian matrix and signless Laplacian matrix . Recently,…
math.CO2024
On walk-regular graphs and optimal duals of frames generated by graphs
Deepshikha, Aniruddha Samanta
Erasures are a common problem that arises while signals or data are being transmitted. A profound challenge in frame theory is to find the optimal dual frames (-frames) to mini…