Welcome to the project PEN! Next year 2008, we are going to organize a “problem of the bi-week“, as a continuation of the projcet PEN Solutions Book. Here, the readers will meet challenging problems from PEN Problems Book with solutions. We strongly hope that our project will stimulate challenging high school students, undergraduate students and [...]
Archive for December, 2007
Problem of the Bi-Week!
Posted in Problem of the Bi-Week on December 19, 2007 | Leave a Comment »
