Attention to all new members!

If you are now selected to be our group new member, you will have a great chance to get many cool Mathematics books in software ( PDF or DJVU )! Please email us if you want to get any of the following books:

Elementary Level( 9th grade or below ):

Elementary Math Word Problems ( 2005 )
Introduction to Proofs ( unofficially prepared by CMG member in 2007 )

Intermediate Level ( 10th-11th grade ):

Junior Balkan Mathematical Olympiad ( 2003 )
Topics in Inequalities ( 2007 )

Olympiad Level ( 12th grade ):

Chinese Old Book ( Not sure for the Year! Written in Chinese )

Challenging Problems in Geometry ( 1996 )

Olympiad Problems from Arounf the World ( 1997 )

Problem-solving strategies ( 1998 )

Mathematical Problems and Proofs ( 2002 )

Math Olympiad Problems Collection ( 2003 )

103 Trigonometry Problems ( 2005 )

The IMO Compendium ( 2006 )

104 Number Theory Problems ( 2007 )

Mathematical Olympiad in China ( 2007 written in English )

Romanian Mathematical Olympiad ( 2007 )

New World Selection I ( Unofficially prepared by CMG member in 2007 )
New World Selection II ( Unofficially prepared by CMG member in 2008 )

University Level:
The William Lowell Putnam Mathematical Competition 1985–2000 ( 2002 )
Advanced Calculus with Application in Statistics ( 2003 )
Mathematics for Computer Science ( 2004 )
Hypercomplex Numbers in Geometry and Physics ( 2004 )

Unsolved series:
Solved and Unsolved Problems in Number Theory and Geometry 1 ( 2000 )
solved and Unsolved Problems in Number Theory and Geometry 2 ( 2000 )

Must Read it!

Programming Contest

For those who like doing math AND programming, GOOGLE this: ACM ICPC programming contest!

CoDe YoUr BrAiN!!!

http://cm2prod.baylor.edu/login.jsf

Rule of Inference, out of date Joke. haha

Do you know therefore lim(x-->5)(1/(x-5))= what?

Math is actually fun!

Knowledge=Power (1)
Work=Power.Time , Thus Power=Work/Time (2)
But Time=Money (3)
(2) & (3) , We get Power=Work/Money (4)
Replace (4) in (1) , we get:
Knowledge=Work/Money , Thus Money=Work/Knowledge

Therefore, when Knowledge approaches to infinity, the Money approaches to 0
And When Knowledge approaches to 0, the Money approaches to
So, if you do NOT understand any of this you will SOON be RICH, ha ha!