33 reputation
5
bio website duodaa.com
location China
age 23
visits member for 1 year, 7 months
seen Aug 24 '13 at 13:31

"If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is complicate." – John von Neumann

如果一个人不相信数学是简单的,那仅仅只是因为他没有意识到复杂的生活是有多难。 -冯·诺伊曼


Aug
12
asked Why couldn't use the mathematical induction?
Aug
11
awarded  Scholar
Aug
11
accepted To prove the equivalence definition of Riemann integral.
Aug
2
revised To prove the equivalence definition of Riemann integral.
added 3 characters in body
Aug
2
awarded  Supporter
Aug
2
revised To prove the equivalence definition of Riemann integral.
added 2 characters in body
Aug
2
comment To prove the equivalence definition of Riemann integral.
I edited the ques.
Aug
2
revised To prove the equivalence definition of Riemann integral.
added 211 characters in body
Aug
2
comment To prove the equivalence definition of Riemann integral.
@coffeemath Thanks. But I didn't get you idea. Could you explain it again to me?
Aug
2
revised To prove the equivalence definition of Riemann integral.
added 28 characters in body
Aug
2
revised To prove the equivalence definition of Riemann integral.
edited body
Aug
2
comment To prove the equivalence definition of Riemann integral.
@coffeemath I edited the ques.
Aug
2
awarded  Editor
Aug
2
revised To prove the equivalence definition of Riemann integral.
edited title
Aug
2
asked To prove the equivalence definition of Riemann integral.
Jul
18
awarded  Student
Jul
18
comment Prove the convergence of binomial series.
Thanks. I edit it.
Jul
18
asked Prove the convergence of binomial series.
Jun
5
awarded  Autobiographer