1. A NEW TYPE CONTINUITY FOR REAL FUNCTIONS.
- Author
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BRAHA, NAIM L. and CAKALLI, HUSEYIN
- Subjects
- *
CONTINUOUS functions , *CAUCHY problem , *MATHEMATICAL sequences , *SET theory , *INTEGERS - Abstract
A real valued function f defined on a subset of R is δ2-ward continuous if limn→∞Δ³ f(Xn) = 0 whenever limn→∞ >Δ³ Xn = 0, where Δ³ zn -- Zn + 3 - 3zn+2 + 3zn+i - Zn for each positive integer n, R denotes the set of real numbers, and a subset E of R is d²-ward compact if any sequence of points in E has a d²-quasi Cauchy subsequence where a sequence (xn) is d²-quasi Cauchy if limn→∞Δ³zn=0. It turns out that the uniform limit process preserves this kind of continuity, and the set of d²-ward continuous functions is a closed subset of the set of continuous functions. [ABSTRACT FROM AUTHOR]
- Published
- 2016