Geodesic
Pták homomorphism theorem revisited
Czechoslovak Mathematical Journal, Tome 50 (2000) no. 2, pp. 341-346.

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Rodrigues’ extension (1989) of the classical Pták’s homomorphism theorem to a non-necessarily locally convex setting stated that a nearly semi-open mapping between a semi-B-complete space and an arbitrary topological vector space is semi-open. In this paper we study this extension and, as a consequence of the results obtained, provide an improvement of Pták’s homomorphism theorem.
Classification : 46A16, 46A30, 47A05
Keywords: homomorphism theorem B-complete space; B-complete space 
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     title = {Pt\'ak homomorphism theorem revisited},
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Ferrer, J. R.; López Pellicer, M.; Ruiz, L. M. Sánchez. Pták homomorphism theorem revisited. Czechoslovak Mathematical Journal, Tome 50 (2000) no. 2, pp. 341-346. http://geodesic.mathdoc.fr/item/CMJ_2000__50_2_a8/