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On II-approximate limits and II-approximate smoothness

Zduńczyk R.

Annales Societatis Mathematicae Polonae. Seria 1: Commentationes Mathematicae

2006

Vol. 46, [Z] 1

1-16

In this paper we present some results based on slightly modified idea of the I-density introduced by Władysław Wilczyński. Some theorems are generalized versions of results from [2] and [3]. We investigate properties of functions from R^X, where X is supplied with the I-density. We try to free our considerations from the assumption of Baire property, or measurability. In some cases this is not done yet. Star-marked statements still need that assumption, proofs presented here are done for Baire property, but it is possible to adapt them to measure. I-density itself does not require any structure of considered space but a metric vector space over R. However, in last section we confine ourselves to R, for we make use of R’s structure for simplicity. To find more about related topics see [4], [5], more bibliography one can find in [1] and [5].