Ir al contenido

Documat


Space of quasicontinuous functions with the topology of uniform convergence on semi-compacta

  • Barman, Neelim Kumar [1] ; Debajit Hazarika [1]
    1. [1] Tezpur University

      Tezpur University

      India

  • Localización: Applied general topology, ISSN-e 1989-4147, ISSN 1576-9402, Vol. 27, Nº. 1, 2026
  • Idioma: inglés
  • DOI: 10.4995/agt.24827
  • Enlaces
  • Resumen
    • We introduce a new set-open topology on function spaces namely the semi-compact-open topology. The topology of uniform convergence on semi-compacta lies between the topology of pointwise convergence and the topology of uniform convergence. We show that for the space of quasicontinuous functions the topology of uniform convergence on semi-compacta coincides with the semi-compact-open topology. We also investigate results relating to induced functions,  cardinal invariants and Ascoli like properties on the space of quasicontinuous functions when equipped with the topology of uniform convergence on semi-compacta.

  • Referencias bibliográficas
    • R. F. Arens and J. Dugundji, Topologies for function spaces, Pacific J. Math. 1 (1951), 5-31. https://doi.org/10.2140/pjm.1951.1.5
    • R. Baire, Sur les fonctions de variables réelles, Annali di Mat. 3 (1899), 1-123. https://doi.org/10.1007/BF02419243
    • G. Beer, Topologies on closed and closed convex sets, Vol. 268, Springer Science & Business Media (1993). https://doi.org/10.1007/978-94-015-8149-3
    • J. Borsík, Sums of quasicontinuous functions, Math. Bohem. 118 (1993), 313-319. https://doi.org/10.21136/MB.1993.125925
    • C. Dorsett, Semiconvergence and semicompactness, Indian J. Mech. Math. 19 (1981), 11-17.
    • R. Engelking, General Topology, Sigma Series in Pure Mathematics, Vol. 6, Heldermann Verlag Berlin (1988).
    • Ľ. Holá and D. Holý, Quasicontinuous functions and the topology of uniform convergence on compacta, Filomat 35 (2021), 911-917. https://doi.org/10.2298/FIL2103911H
    • Ľ. Holá and D. Holý, Quasicontinuous functions and the topology of pointwise convergence, Topology Appl. 282 (2020), 107301. https://doi.org/10.1016/j.topol.2020.107301
    • Ľ. Holá and D. Holý, Metrizability of the space of quasicontinuous functions, Topology Appl. 246 (2018), 137-143. https://doi.org/10.1016/j.topol.2018.07.001
    • Ľ. Holá and D. Holý, Quasicontinuous functions and compactness, Mediterr. J. Math. 14 (2017), 219. https://doi.org/10.1007/s00009-017-1014-7
    • Ľ. Holá and D. Holý, Pointwise convergence of quasicontinuous mappings and Baire spaces, Rocky Mountain J. Math. 41 (2011), 1883-1894. https://doi.org/10.1216/RMJ-2011-41-6-1883
    • D. Holý, Ascoli-type theorems for locally bounded quasicontinuous functions, minimal usco and minimal cusco maps, Ann. Funct. Anal. 6 (2015),...
    • S. Kempisty, Sur les fonctions quasi-continues, Fund. Math. 19 (1932), 184-197. https://doi.org/10.4064/fm-19-1-184-197
    • F. H. Khedr, On semi compact spaces, Delta J. Sci. 8 (1984), 421-430.
    • N. Levine, Semi-open sets and semi-continuity in topological spaces, Amer. Math. Monthly 70 (1963), 36-41. https://doi.org/10.1080/00029890.1963.11990039
    • R. A. McCoy and I. Ntantu, Topological Properties of Spaces of Continuous Functions, Lecture Notes in Mathematics, vol. 1315, Springer-Verlag,...
    • T. Neubrunn, Quasi-continuity, Real Anal. Exchange 14 (1988), 259-306. https://doi.org/10.2307/44151947
    • S. E. Nokhrin and A. V. Osipov, On the coincidence of the set-open and uniform topologies, Proc. Inst. Math. Mech., 267, suppl. 1 (2009),...
    • A. V. Osipov, The Fréchet-Urysohn property of quasicontinuous functions, Rocky Mountain J. Math. 55 (2025), 203-210. https://doi.org/10.1216/rmj.2025.55.203
    • A. V. Osipov, On countable tightness type properties of spaces of quasi-continuous functions, arXiv:2311.07517 [math.GN].
    • A. V. Osipov, Uniformity of uniform convergence on the family of sets, Topology Proceedings 50 (2017), 79-86.
    • A. V. Osipov, Topological-algebraic properties of function spaces with set-open topologies, Topology Appl. 159 (2012), 800-805. https://doi.org/10.1016/j.topol.2011.11.049
    • H. P. Thielman, Types of functions, Amer. Math. Monthly 60 (1953), 156-161. https://doi.org/10.1080/00029890.1953.11988260

Fundación Dialnet

Mi Documat

Opciones de artículo

Opciones de compartir

Opciones de entorno