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B-Fredholm Spectra of Drazin Invertible Operators and Applications
OtherAbstract: In this article, we consider Drazin invertible operators for study of the relationship between theirPalabras claves:Autores:ELVIS COROMOTO APONTE VALLADARES, Jhixon Steven Macías GarcíaFuentes:googleThe σ-sibling numbers
OtherAbstract: In this article, through the divisor function σ (n), n∈ N, we define a new class of numbers, which wPalabras claves:Autores:ELVIS COROMOTO APONTE VALLADARES, Jhixon Steven Macías GarcíaFuentes:google