Some cardinal invariants in real analysis

Rok, strany: 1998, 39 - 45

This article is a continuation of papers [T. Natkaniec: Almost continuity, Real Anal. Exchange 17 (1991–92), 462–520], [K. Ciesielski, A. W. Miller: Cardinal invariants concerning functions whose sum is almost continuous, Real Anal. Exchange 20 (1994–95), 657–673], [T. Natkaniec, I. Recł aw: Cardinal invariants concerning functions whose product is almost continuous Real Anal. Exchange 20 (1994–95), 281–285], [K. Ciesielski, I. Rec{ł}aw: Cardinal invariants concerning extendable and peripherally continuous functions, Real Anal. Exchange 21 (1995–96), 459–472], [T. Natkaniec, T: New cardinal invariants in real analysis, Bull. Polish Acad. Sci. Math. 44 (1996), 251–256], in which cardinals concerning addition, multiplication, compositions and $\circ$-coding of real functions have been studied. We establish these cardinals for the class of almost continuous functions in the sense of Husain.

ISO 690:

Natkaniec, T. 1998. Some cardinal invariants in real analysis. In Tatra Mountains Mathematical Publications, vol. 14, no.1, pp. 39-45. 1210-3195.

APA:

Natkaniec, T. (1998). Some cardinal invariants in real analysis. Tatra Mountains Mathematical Publications, 14(1), 39-45. 1210-3195.