Several approximations of pi(x)

Autor: Panaitopol, Laurentiu
Matična publikacija: Mathematical inequalities & applications (1999)

Some generalizations for a theorem by Landau

Autor: Panaitopol, Laurentiu
Matična publikacija: Mathematical inequalities & applications (2001)

Series involving the least and the greatest prime factor of a natural number

Autor: Mititica, Gabriel
Matična publikacija: Mathematical inequalities & applications (2010)