Title of article :
Three kinds of convergence and the associated -Baire classes
Author/Authors :
Filip?w، نويسنده , , Rafa? and Szuca، نويسنده , , Piotr، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Abstract :
We consider ideal versions of pointwise, discrete and equal convergence of sequences of functions. Defining, in a natural way, ideal pointwise (discrete, equal) Baire classes of functions, we show that these classes are equal to their classical counterparts for ideals for which there is a winning strategy in a game introduced by Laflamme (1996) [10]. In the proofs we make extensive use of a characterization (in terms of filters F which are ω-diagonalizable by F -universal sets) of a winning strategy. This article extends results of Laczkovich and Recław (2009) [9], and Debs and Saint Raymond (2009) [5].
Keywords :
Baire classification of functions , Baire one star functions , Laflamme game , Scatteredly continuous functions , Borel ideal , Filter convergence , Statistical convergence , Ideal convergence , Convergence of sequences of functions , Equal convergence , Discrete convergence , Analytic ideal
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications