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Publicado en línea: 09 abr 2020
Páginas: 111 - 115
Recibido: 25 mar 2019
Aceptado: 25 abr 2019
DOI: https://doi.org/10.2478/auom-2020-0008
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© 2020 Carlos M. da Fonseca et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Based on a less-known result, we prove a recent conjecture concerning the determinant of a certain Sylvester-Kac type matrix related to some Lie Algebras. The determinant of an extension of that matrix is presented.