Abstract
A quasi-normed cone is a pair (X, p) such that X is a (not necessarily cancellative) cone and q is a quasi-norm on X. The aim of this paper is to prove a closed graph and an open mapping type theorem for quasi-normed cones. This is done with the help of appropriate notions of completeness, continuity and openness that arise in a natural way from the setting of bitopological spaces.
Similar content being viewed by others
References
Alegre C, Ferrer J and Gregori V, On the Hahn-Banach theorem in certain linear quasiuniform structures, Acta Math. Hungar. 82 (1999) 315–320
Alemany E and Romaguera S, On half-completion and bicompletion of quasi-metric spaces, Comment. Math. Univ. Carolinae 37 (1996) 749–756
Cao J and Reilly I L, On pairwise almost continuous multifunctions and closed graphs, Indian J. Math. 38 (1996) 1–17
Ferrer J, Gregori V and Alegre C, Quasi-uniform structures in linear lattives, Rocky Mountain J. Math. 23 (1993) 877–884
Fletcher P and Lindgren W F, Quasi-Uniform Spaces (Marcel Dekker) (1982)
Fuchssteiner B and Lusky W, Convex Cones (North-Holland, Amsterdam) (1981)
García-Raffi L M, Compactness and finite dimension in asymmetric normed linear spaces, Topology Appl. 153 (2005) 844–853
García-Raffi L M, Romaguera S and Sánchez-Pérez E A, Sequence spaces and asymmetric norms in the theory of computational complexity, Math. Comput. Model. 36 (2002) 1–11
García-Raffi L M, Romaguera S and Sánchez Pérez E A, The bicompletion of an asymmetric normed linear space, Acta Math. Hungar. 97 (2002) 183–191
García-Raffi L M, Romaguera S and Sánchez Pérez EA, The dual space of an asymmetric normed linear space, Quaest. Math. 26 (2003) 83–96
García-Raffi L M, Romaguera S, Sánchez-Pérez E A and Valero O, Metrizability of the unit ball of the dual of a quasi-normed cone, Boll. Unione Mat. Italiana, 8 (2004) 483–492
Hussain T, Almost continuous mappings, Prace. Mat. 10 (1966) 1–7
Kar A and Bhattacharyya P, Bitopological preopen sets, precontinuity and preopen mappings, Indian. J. Math. 34 (1992) 295–309
Kelly J C, Bitopological spaces, Proc. London Math. Soc. 13 (1963) 71–89
Künzi H P A, Nonsymmetric distances and their associated topologies: About the origins of basic ideas in the area of asymmetric topology, in: Handbook of the History of General Topology (eds) C E Aull and R Lowen (Kluwer Acad. Publ.) (2001) vol. 3, pp. 853–968
Marín J, An extension of Alaoglu’s theorem for topological semicones, Houston J. Math. (to appear)
Mashhour A S, Abd El-Monsef M E and El-Deeb S N, Precontinuous and weak precontinuous mappings, Proc. Math. Phys. Soc. Egypt. 53 (1982) 47–53
Oltra S and Valero O, Isometries on quasi-normed cones and bicompletion, New Zealand J. Math. 33 (2004) 1–8
Reilly I L, Subrahmanyam P V and Vamanamurthy M K, Cauchy sequences in quasipseudo-metric spaces, Monaths Math. 93 (1982) 127–140
Rodríguez-López J, A new approach to epiconvergence and some applications, Southeast Asian Bull. Math. 28 (2004) 685–701
Romaguera S, Sánchez-Pérez E A and Valero O, A characterization of generalized monotone normed cones, Acta Mathematica Sinica-English Series 23 (2007) 1067–1074
Romaguera S, Sánchez-Pérez E A and Valero O, The dual complexity space as the dual of a normed cone, Electronic Notes in Theoret. Comput. Sci. 161 (2006) 165–174
Romaguera S, Sánchez-Pérez E A and Valero O, Computing complexity distances between algorithms, Kybernetika 39 (2003) 569–582
Romaguera S, Sánchez-Pérez E A and Valero O, Quasi-normed monoids and quasimetrics, Publ. Math. Debrecen 62 (2003) 53–69
Romaguera S, Sánchez-Pérez E A and Valero O, Dominating extensions of functionals and V-convex functions on cancellative cones, Bull. Austral. Math. Soc. 67 (2003) 87–94
Romaguera S, Sánchez-Pérez J V and Valero O, A mathematical model to reproduce the wave field generated by convergent lenses, Appl. Sci. 6 (2004) 42–50
Romaguera S and Sanchis M, Semi-Lipschitz functions and best approximation in quasimetric spaces, J. Approx. Theory 103 (2000) 292–301
Romaguera S and Schellekens M, Duality and quasi-normability for complexity spaces, Appl. Gen. Topology 3 (2002) 91–112
Romaguera S and Schellekens M, Quasi-metric properties of complexity spaces, Topology Appl. 98 (1999) 311–322
Roth W, Hahn-Banach type theorems for locally convex cones, J. Austral. Math. Soc. A68 (2000) 104–125
Schellekens M, The Smyth completion: a common foundation for denotational semantics and complexity analysis, in: Proc. MFPS 11, Electronic Notes in Theoret. Comput. Sci. 1 (1995) 211–232
Valero O, Quotient normed cones, Proc. Indian Acad. Sci. (Math. Sci.) 116 (2006) 175–191
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Valero, O. Closed graph and open mapping theorems for normed cones. Proc Math Sci 118, 245–254 (2008). https://doi.org/10.1007/s12044-008-0017-5
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12044-008-0017-5