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Publicado en línea: 31 mar 2018
Páginas: 69 - 80
Recibido: 13 may 2017
Aceptado: 22 jun 2017
DOI: https://doi.org/10.2478/auom-2018-0003
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© 2018
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Periodic elements in a ring generate special classes of strongly clean elements. In particular, elements b such that b = b3+, which are called tripotents and include idempotents, negative of idempotents and order 2 units, are strongly clean. Such elements are determined in 2×2 matrix rings over commutative domains or over arbitrary division rings and for rings of integers modulo n.