{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:02:52Z","timestamp":1760234572606,"version":"build-2065373602"},"reference-count":20,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,6,2]],"date-time":"2021-06-02T00:00:00Z","timestamp":1622592000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Axioms"],"abstract":"<jats:p>In this article, we consider Drazin invertible operators for study of the relationship between their B-Fredholm spectra and the transfer between some of the spectral properties defined through B-Fredholm spectra of this class of operators. Among other results, we investigate the transfer of generalized a-Weyl\u2019s theorem from T to their Drazin inverse S, if it exists.<\/jats:p>","DOI":"10.3390\/axioms10020111","type":"journal-article","created":{"date-parts":[[2021,6,2]],"date-time":"2021-06-02T21:23:41Z","timestamp":1622669021000},"page":"111","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["B-Fredholm Spectra of Drazin Invertible Operators and Applications"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5745-3233","authenticated-orcid":false,"given":"Elvis","family":"Aponte","sequence":"first","affiliation":[{"name":"Escuela Superior Polit\u00e9cnica del Litoral, F.C.N.M., Campus Gustavo Galindo Km. 30.5 V\u00eda Perimetral, Guayaquil EC090112, Ecuador"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9353-5850","authenticated-orcid":false,"given":"Jhixon","family":"Mac\u00edas","sequence":"additional","affiliation":[{"name":"Escuela Superior Polit\u00e9cnica del Litoral, F.C.N.M., Campus Gustavo Galindo Km. 30.5 V\u00eda Perimetral, Guayaquil EC090112, Ecuador"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9749-4099","authenticated-orcid":false,"given":"Jos\u00e9","family":"Sanabria","sequence":"additional","affiliation":[{"name":"Departamento de Matem\u00e1ticas, Universidad de Sucre, Puerta Roja Carrera 28 No. 5-267, Sincelejo 700001, Colombia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4219-3392","authenticated-orcid":false,"given":"Jos\u00e9","family":"Soto","sequence":"additional","affiliation":[{"name":"Departamento de Matem\u00e1ticas, Universidad Centroccidental Lisandro Alvarado, N\u00facleo Obelisco, Barquisimeto 3001, Venezuela"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1515\/dema-2020-0020","article-title":"Structure of n-quasi left m-invertible and related classes of operators","volume":"53","author":"Duggal","year":"2020","journal-title":"Demonstr. 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