To PEN friends.
After about two months, we will weblish the first official edition of PEN extended with more problems. This means that PEN Problems Book has at least 1000 challenging Problems in Elementary Number theory.
THE NEXT STEP IS OBVIOUS: THE EFFICIENT USE OF DATABASE. It entirely depends on you, PEN friends! To complete PEN Solutions Book, we need your help and more PEN Team members.
We all wait your creative solutions(including generalizations and comments) for problems in PEN Problems Book or in PEN extended. We want young minds who proofread “with sharp eyes” the solutions in our supporting site at ML. We need more people who do the TeXing work on the PEN Problems Book. If you want to participate this forever Project, then please let us know!
The second season of Problems of Bi-Week Project will begin later, not starting in 1st July. At least after IMO, maybe around August. All I can say now is that it will take some time. I hope, at least before the second week of September. In the second season, we will meet many number theory problems from IMO Short List Book ’07. See you soon!
from PEN Team