Displaying 261 – 280 of 301

Showing per page

Summation processes viewed from the Fourier properties of continuous unimodular functions on the circle

Jean-Pierre Kahane (2011)

Banach Center Publications

The main purpose of this article is to give a new method and new results on a very old topic: the comparison of the Riemann processes of summation (R,κ) with other summation processes. The motivation comes from the study of continuous unimodular functions on the circle, their Fourier series and their winding numbers. My oral presentation in Poznań at the JM-100 conference exposed the ways by which this study was developed since the fundamental work of Brézis and Nirenberg on the topological degree...

Sur le diamètre transfini entier d'un intervalle réel

Francesco Amoroso (1990)

Annales de l'institut Fourier

En utilisant à la fois la théorie des polynômes orthogonaux et des arguments élémentaires de géométrie des nombres, nous donnons ici des nouveaux encadrements pour le diamètre transfini entier d’un intervalle I d’extrémités rationnelles. Ces encadrements dépendent explicitement de la longueur de I et des dénominateurs de ses extrémités.

Currently displaying 261 – 280 of 301