{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,5]],"date-time":"2026-03-05T21:03:38Z","timestamp":1772744618621,"version":"3.50.1"},"reference-count":25,"publisher":"World Scientific Pub Co Pte Ltd","issue":"02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Discrete Math. Algorithm. Appl."],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:p> Let [Formula: see text] be a graph of which [Formula: see text] be the adjacency matrix and [Formula: see text] be a diagonal matrix whose diagonal entries are the degrees of vertices of [Formula: see text]. [Formula: see text] is known as the signless Laplacian matrix of the graph [Formula: see text]. For any real [Formula: see text] matrix is defined by the convex combination [Formula: see text] of [Formula: see text] and [Formula: see text]. Clearly, [Formula: see text] coincides with [Formula: see text] for [Formula: see text] and coincides with [Formula: see text] for [Formula: see text]. Thus, the [Formula: see text] eigenvalues are generalizations of adjacency eigenvalues and signless Laplacian eigenvalues. <\/jats:p><jats:p> In this paper, we have obtained the [Formula: see text] spectra of corona and edge corona of two graphs. We have also shown that [Formula: see text] cospectral graphs and [Formula: see text] equienergetic graphs can be obtained from there. <\/jats:p>","DOI":"10.1142\/s1793830921501123","type":"journal-article","created":{"date-parts":[[2021,3,1]],"date-time":"2021-03-01T16:13:21Z","timestamp":1614615201000},"source":"Crossref","is-referenced-by-count":1,"title":["A\u03b1 spectra of graphs obtained by two corona operations and A\u03b1 cospectral graphs"],"prefix":"10.1142","volume":"14","author":[{"given":"Md. 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