21 November 2007

• 12:1312:13, 21 November 2007 diff hist +1 m 1997 AIME Problems/Problem 3 →Solution
• 12:1212:12, 21 November 2007 diff hist +1 m 1997 AIME Problems/Problem 2 →Problem
• 12:1212:12, 21 November 2007 diff hist +1 m 1997 AIME Problems →Problem 2
• 12:0312:03, 21 November 2007 diff hist −1 m 2001 AIME I Problems/Problem 6 →Solution 1

16 November 2007

• 11:3111:31, 16 November 2007 diff hist +3 m Vector →Vector Operations
• 11:3011:30, 16 November 2007 diff hist +1 m Vector →Addition of Vectors

15 November 2007

• 09:3909:39, 15 November 2007 diff hist +4 m Euclid's Lemma →Proof of Euclid's lemma
• 09:2809:28, 15 November 2007 diff hist 0 m 2006 AIME II Problems/Problem 13 →Problem
• 09:2809:28, 15 November 2007 diff hist 0 m 2006 AIME II Problems →Problem 13
• 09:2509:25, 15 November 2007 diff hist 0 m 2006 AIME II Problems/Problem 10 →Solution
• 09:2109:21, 15 November 2007 diff hist +3 m 2006 AIME II Problems/Problem 7 →Solution
• 09:1609:16, 15 November 2007 diff hist +1 m 2006 AIME II Problems →Problem 3

12 November 2007

• 12:5812:58, 12 November 2007 diff hist +1 m 1996 AIME Problems/Problem 13 →Problem
• 12:5712:57, 12 November 2007 diff hist +1 m 1996 AIME Problems →Problem 13
• 12:5212:52, 12 November 2007 diff hist +1 m 1996 AIME Problems/Problem 2 →Problem
• 12:5212:52, 12 November 2007 diff hist +1 m 1996 AIME Problems →Problem 2
• 12:4812:48, 12 November 2007 diff hist −2 m 1992 AIME Problems/Problem 5 →Solution
• 12:4512:45, 12 November 2007 diff hist −5 m 1992 AIME Problems/Problem 1 →Solution
• 12:4212:42, 12 November 2007 diff hist 0 m 1988 AIME Problems/Problem 15 →Problem
• 12:4112:41, 12 November 2007 diff hist +1 m 1988 AIME Problems →Problem 15
• 12:3412:34, 12 November 2007 diff hist −1 m 1988 AIME Problems →Problem 6
• 12:2712:27, 12 November 2007 diff hist 0 m 2000 AIME II Problems/Problem 2 →Problem
• 12:2712:27, 12 November 2007 diff hist 0 m 2000 AIME II Problems →Problem 2
• 12:1312:13, 12 November 2007 diff hist 0 m 2007 AMC 12B Problems →Problem 18

4 November 2007

• 12:2512:25, 4 November 2007 diff hist −1 m Combination →Formulas/Identities

30 October 2007

• 11:4511:45, 30 October 2007 diff hist −1 m Fallacy →All horses are the same color
• 11:4211:42, 30 October 2007 diff hist −1 m 2006 AMC 12A Problems/Problem 17 →Solution
• 11:4111:41, 30 October 2007 diff hist 0 m 2006 AMC 10A Problems/Problem 24 →Solution

28 October 2007

• 12:5912:59, 28 October 2007 diff hist 0 m 1960 IMO Problems/Problem 6 →Problem
• 12:5912:59, 28 October 2007 diff hist 0 m 1960 IMO Problems →Problem 6
• 12:5812:58, 28 October 2007 diff hist 0 m 1960 IMO Problems/Problem 5 →Problem
• 12:5812:58, 28 October 2007 diff hist 0 m 1960 IMO Problems →Problem 5
• 12:4012:40, 28 October 2007 diff hist 0 m P versus NP →Overview

27 October 2007

• 13:1313:13, 27 October 2007 diff hist +1 m Muirhead's Inequality →Usage on Olympiad Problems
• 13:1213:12, 27 October 2007 diff hist +1 m Muirhead's Inequality →Example
• 13:1013:10, 27 October 2007 diff hist 0 m Schur's Inequality →Generalized Form
• 12:5412:54, 27 October 2007 diff hist 0 m Zermelo-Fraenkel Axioms →The Axiom of Choice
• 12:4912:49, 27 October 2007 diff hist −2 m 1990 AIME Problems/Problem 12 →Solution
• 12:4912:49, 27 October 2007 diff hist +1 m 1990 AIME Problems/Problem 12 →Solution
• 12:4312:43, 27 October 2007 diff hist +1 m Trigonometric identities →Pythagorean Identities

24 October 2007

• 12:1712:17, 24 October 2007 diff hist −1 m 1987 AIME Problems/Problem 12 →Solution
• 11:5611:56, 24 October 2007 diff hist 0 m 1988 AIME Problems/Problem 9 →Solution
• 11:5311:53, 24 October 2007 diff hist −2 m 1988 AIME Problems/Problem 6 →Solution 1 (specific)
• 11:5011:50, 24 October 2007 diff hist +1 m 1988 AIME Problems/Problem 1 →Solution
• 11:4211:42, 24 October 2007 diff hist +4 m 2006 Cyprus MO/Lyceum/Problems →Problem 19
• 11:3811:38, 24 October 2007 diff hist +1 m 2006 Cyprus MO/Lyceum/Problem 9 →Problem
• 11:3711:37, 24 October 2007 diff hist +1 m 2006 Cyprus MO/Lyceum/Problems →Problem 9

19 October 2007

• 11:4911:49, 19 October 2007 diff hist +1 m 2007 AMC 12A Problems/Problem 10 →Problem
• 11:4611:46, 19 October 2007 diff hist +1 m 1999 AIME Problems/Problem 9 →Problem

18 October 2007

• 11:5411:54, 18 October 2007 diff hist +2 m 1984 AIME Problems/Problem 10 →Solution