Article contributions are always welcome.
Problems in Elementary Number theory is devoted to the publication of expository papers in elementary number theory. You need to choose one of the problems from PEN Problems Book. Please, visit here to check out the problems already chosen. You may also consult problems discussion of PEN Problems Book. Please, direct all questions regarding PEN to firstname.lastname@example.org
Manuscripts should be written in English. Download the TeX file. Use this and compile it into the PDF file. Please, submit your articles in the PDF file to PEN Team at