A sufficient condition for the insertion of a contra-continuous (Baire-one) function

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A sufficient condition for the insertion of a contra-continuous (resp. Baire-one) function between two comparable real-valued functions is given on the topological spaces that L-sets are open (resp. G-delta-sets).
5 pages

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General Topology, 54C08 (Primary) 54C10, 26A15, 54C30 (Secondary)

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http://salesiana.dossiersoluciones.com/handle/123456789/73728

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0412553
 http://arxiv.org/abs/math/0412553

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arXiv