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A crucial step to obtain this characterization is proving that if a matrix [Formula: see text] is [Formula: see text]-spectrally monomorphic then it is [Formula: see text]-spectrally monomorphic for [Formula: see text] in [Formula: see text].<\/jats:p>","DOI":"10.1142\/s1793830925500399","type":"journal-article","created":{"date-parts":[[2025,2,14]],"date-time":"2025-02-14T04:19:56Z","timestamp":1739506796000},"source":"Crossref","is-referenced-by-count":0,"title":["Characterization of k-spectrally monomorphic Hermitian matrices"],"prefix":"10.1142","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-9967-2275","authenticated-orcid":false,"given":"Kawtar","family":"Attas","sequence":"first","affiliation":[{"name":"Laboratoire de Math\u00e9matiques Fondamentales et Appliqu\u00e9es, Facult\u00e9 des Sciences A\u00efn Chock, Hassan II University of Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3977-6346","authenticated-orcid":false,"given":"Abderrahim","family":"Boussa\u00efri","sequence":"additional","affiliation":[{"name":"Laboratoire de Math\u00e9matiques Fondamentales et Appliqu\u00e9es, Facult\u00e9 des Sciences A\u00efn Chock, Hassan II University of Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3603-6326","authenticated-orcid":false,"given":"Imane","family":"Souktani","sequence":"additional","affiliation":[{"name":"Laboratoire de Math\u00e9matiques Fondamentales et Appliqu\u00e9es, Facult\u00e9 des Sciences A\u00efn Chock, Hassan II University of Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2025,3,25]]},"reference":[{"key":"S1793830925500399BIB001","doi-asserted-by":"publisher","DOI":"10.1016\/0012-365X(86)90111-1"},{"key":"S1793830925500399BIB002","doi-asserted-by":"publisher","DOI":"10.1017\/S0004972700044257"},{"key":"S1793830925500399BIB003","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-349-03521-2"},{"key":"S1793830925500399BIB004","doi-asserted-by":"publisher","DOI":"10.1002\/malq.19990450313"},{"key":"S1793830925500399BIB005","doi-asserted-by":"publisher","DOI":"10.1016\/j.crma.2012.09.009"},{"key":"S1793830925500399BIB006","doi-asserted-by":"publisher","DOI":"10.1016\/j.disc.2022.112804"},{"key":"S1793830925500399BIB007","doi-asserted-by":"publisher","DOI":"10.1016\/j.laa.2024.04.026"},{"key":"S1793830925500399BIB008","doi-asserted-by":"publisher","DOI":"10.1016\/0097-3165(72)90098-2"},{"key":"S1793830925500399BIB009","doi-asserted-by":"publisher","DOI":"10.1142\/4197"},{"issue":"11","key":"S1793830925500399BIB010","first-page":"1015","volume":"322","author":"El-Issawi A.","year":"1996","journal-title":"C. 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