1999/91/1

On the Barban-Davenport-Halberstam theorem: XI

Three two-dimensional Weyl steps in the circle problem I. The Hessian determinant

Three two-dimensional Weyl steps in the circle problem II. The logarithmic Riesz mean for a class of arithmetic functions

Periodic sequences of pseudoprimes connected with Carmichael numbers and the least period of the function ${\displaystyle l^C\_x}$

A note on the Diophantine equation ${\displaystyle a^x+b^y=c^z}$