# User contributions

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- 20:48, 28 May 2013 (diff | hist) . . (0) . . m The Ross Program (→Course structure) (current)
- 20:48, 28 May 2013 (diff | hist) . . (-1) . . m The Ross Program (→Course structure)
- 12:14, 3 January 2013 (diff | hist) . . (+1) . . m 2011 IMO Problems/Problem 4 (→Solution) (current)
- 16:29, 2 January 2013 (diff | hist) . . (+31) . . 2012 USAJMO Problems/Problem 5 (→Alternate, formal argument)
- 14:48, 24 December 2012 (diff | hist) . . (0) . . m 1993 AIME Problems/Problem 11 (→Solution: typo)
- 22:01, 20 October 2012 (diff | hist) . . (-431) . . 2006 AMC 10B Problems/Problem 25 (→Solution)
- 19:13, 26 August 2012 (diff | hist) . . (+3) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:12, 26 August 2012 (diff | hist) . . (-11) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:12, 26 August 2012 (diff | hist) . . (-34) . . m 2011 AIME II Problems/Problem 15 (Undo revision 48118 by Baijiangchen (talk))
- 19:11, 26 August 2012 (diff | hist) . . (+34) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:08, 26 August 2012 (diff | hist) . . (0) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:07, 26 August 2012 (diff | hist) . . (+53) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:06, 26 August 2012 (diff | hist) . . (+45) . . m 2011 AIME II Problems/Problem 15 (→Solution)
- 19:05, 26 August 2012 (diff | hist) . . (+3) . . 2011 AIME II Problems/Problem 15 (→Solution)
- 19:04, 26 August 2012 (diff | hist) . . (+37) . . 2011 AIME II Problems/Problem 15 (→Solution: more of the same, and made it more clear (IMHO))
- 19:00, 26 August 2012 (diff | hist) . . (-226) . . 2011 AIME II Problems/Problem 15 (→Solution: Unnecessary information, and more strict vs. not strict)
- 18:57, 26 August 2012 (diff | hist) . . (+1) . . 2011 AIME II Problems/Problem 15 (→Solution: Strict vs. Not Strict)
- 18:56, 26 August 2012 (diff | hist) . . (+9) . . 2011 AIME II Problems/Problem 15 (→Solution)
- 18:54, 26 August 2012 (diff | hist) . . (+12) . . 2011 AIME II Problems/Problem 15 (→Solution)
- 20:56, 18 August 2012 (diff | hist) . . (0) . . m AoPS Wiki:Competition ratings (eg vs ie)
- 20:56, 18 August 2012 (diff | hist) . . (0) . . m AoPS Wiki:Competition ratings (eg vs ie)
- 13:02, 22 July 2012 (diff | hist) . . (+2) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:13, 22 July 2012 (diff | hist) . . (+53) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:11, 22 July 2012 (diff | hist) . . (+1) . . m 2011 IMO Problems/Problem 4 (→Solution)
- 11:10, 22 July 2012 (diff | hist) . . (-1) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:10, 22 July 2012 (diff | hist) . . (+1) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:10, 22 July 2012 (diff | hist) . . (-6) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:10, 22 July 2012 (diff | hist) . . (+2) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:09, 22 July 2012 (diff | hist) . . (0) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:09, 22 July 2012
(diff | hist) . .
**(+1,515)** . . 2011 IMO Problems/Problem 4 - 00:40, 22 July 2012 (diff | hist) . . (+9) . . User talk:Baijiangchen (→Sam's stuff)
- 00:23, 22 July 2012 (diff | hist) . . (+19) . . User:Baijiangchen (current)
- 00:22, 22 July 2012 (diff | hist) . . (+137) . . N User:Baijiangchen (Created page with "If: <math>W(0):=1</math> <math>W(n):=\sum_{i=0}^{n-1}({n-1 \choose i}W(i)(x-i-1)!(2^{x-i-1}))</math> Then: <math>W(n)=(2n-1)!!</math>")
- 00:21, 22 July 2012 (diff | hist) . . (+1) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+1) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+2) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+13) . . User talk:Baijiangchen
- 00:20, 22 July 2012 (diff | hist) . . (+120) . . N User talk:Baijiangchen (Created page with "If: <math>W(0):=1</math> <math>W(n):=\sum_{i=0}^{n-1}({n-1 \choose i}W(i)(x-i-1)!(2^{x-i-1})</math> Then: W(n)=(2n-1)!!")
- 19:34, 29 May 2012 (diff | hist) . . (+26) . . m Proof by contradiction (→Euclid's proof of the infinitude of primes)
- 22:23, 17 May 2012 (diff | hist) . . (-14) . . m 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:22, 17 May 2012 (diff | hist) . . (+162) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:17, 17 May 2012 (diff | hist) . . (+53) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:15, 17 May 2012 (diff | hist) . . (+168) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:12, 17 May 2012 (diff | hist) . . (0) . . m 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:12, 17 May 2012 (diff | hist) . . (0) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:09, 17 May 2012 (diff | hist) . . (-15) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:57, 14 April 2012 (diff | hist) . . (-38) . . m Without loss of generality
- 20:20, 11 April 2012 (diff | hist) . . (+8) . . m 1986 AIME Problems/Problem 11 (→Solution 2)
- 17:31, 11 April 2012 (diff | hist) . . (+9) . . m 1986 AIME Problems/Problem 10 (→Solution)
- 17:29, 11 April 2012 (diff | hist) . . (+9) . . m 1986 AIME Problems/Problem 10 (→Solution)

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