Displaying 181 – 200 of 249

Showing per page

The Borel structure of some non-Lebesgue sets

Don L. Hancock (2004)

Colloquium Mathematicae

For a given function in some classes related to real derivatives, we examine the structure of the set of points which are not Lebesgue points. In particular, we prove that for a summable approximately continuous function, the non-Lebesgue set is a nowhere dense nullset of at most Borel class 4.

The L r Henstock-Kurzweil integral

Paul M. Musial, Yoram Sagher (2004)

Studia Mathematica

We present a method of integration along the lines of the Henstock-Kurzweil integral. All L r -derivatives are integrable in this method.

The Laplace derivative

Ralph E. Svetic (2001)

Commentationes Mathematicae Universitatis Carolinae

A function f : is said to have the n -th Laplace derivative on the right at x if f is continuous in a right neighborhood of x and there exist real numbers α 0 , ... , α n - 1 such that s n + 1 0 δ e - s t [ f ( x + t ) - i = 0 n - 1 α i t i / i ! ] d t converges as s + for some δ > 0 . There is a corresponding definition on the left. The function is said to have the n -th Laplace derivative at x when these two are equal, the common value is denoted by f n ( x ) . In this work we establish the basic properties of this new derivative and show that, by an example, it is more general than the generalized...

Currently displaying 181 – 200 of 249