H. Fejzic

collaborators

3 papers

math.CA2022

Gaussian Riemann Derivatives

J. M. Ash, S. Catoiu, H. Fejzic

J. Marcinkiewicz and A. Zygmund proved in 1936 that, for all functions $f$ and points $x$ , the existence of the $n$ th Peano derivative $f_{(n)} (x)$ is equivalent to the existence o…

math.CA2022

A Generalization of the GGR Conjecture

S. Catoiu, H. Fejzic

For each positive integer $n$ , function $f$ , and point $c$ , the GGR Theorem states that $f$ is $n$ times Peano differentiable at $c$ if and only if $f$ is $n - 1$ times Peano differe…

math.GM2017

A short proof of the error term in Simpson's rule

Hajrudin Fejzic

In this paper we present a short and elementary proof for the error in Simpson's rule.