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  • On the construction of cospectral nonisomorphic bipartite graphs 
    Kannan, M. Rajesh; Pragada, Shivaramakrishna; WANKHEDE, HITESH (Elsevier B.V., 2022-08)
    In this article, we construct bipartite graphs which are cospectral for both the adjacency and normalized Laplacian matrices using the notion of partitioned tensor products. This extends the construction of Ji, Gong, and ...
  • Constructing cospectral graphs by unfolding non-bipartite graphs 
    Kannan, M. Rajesh; Pragada, Shivaramakrishna; WANKHEDE, HITESH (Elsevier B.V., 2024-11)
    In 2010, Butler introduced the unfolding operation on a bipartite graph to produce two bipartite graphs, which are cospectral for the adjacency and the normalized Laplacian matrices. In this article, we describe how the ...