(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)

• 16:35, 23 April 2012 (diff | hist) . . (-24)‎ . . m 1976 IMO Problems ‎ (→‎Problem 4)
• 15:27, 17 January 2012 (diff | hist) . . (+306)‎ . . Chicken McNugget Theorem ‎
• 12:35, 9 June 2011 (diff | hist) . . (+1,681)‎ . . 2005 Canadian MO Problems/Problem 3 ‎ (→‎Solution) (current)
• 12:14, 5 June 2011 (diff | hist) . . (+6)‎ . . m Extreme principle ‎
• 15:11, 4 June 2011 (diff | hist) . . (0)‎ . . Extreme principle ‎ (→‎Problems)
• 15:11, 4 June 2011 (diff | hist) . . (-1)‎ . . m Extreme principle ‎ (→‎Problems)
• 15:10, 4 June 2011 (diff | hist) . . (+45)‎ . . Extreme principle ‎ (→‎Problems)
• 15:10, 4 June 2011 (diff | hist) . . (+400)‎ . . N Extreme principle/solutions ‎ (Created page with "These are the solutions to the problems on the extreme principle. ===1=== First, we note that it is impossible for a coin <math>\omega</math> to be tangent to six coins <mat...")
• 15:04, 4 June 2011 (diff | hist) . . (+2,488)‎ . . N Extreme principle ‎ (Created page with "The extreme principle (or extremal principle) is a problem-solving technique that involves looking at objects with extreme properties, such as the largest or smallest element. Fo...")
• 16:38, 3 June 2011 (diff | hist) . . (+4,324)‎ . . N Projective geometry ‎ (Created page with 'Projective geometry is a beautiful area of geometry which focuses on properties that are invariant under projective transformations. Unlike Euclidean geometry, there is no notion…')
• 16:27, 3 June 2011 (diff | hist) . . (0)‎ . . m Pascal's Theorem ‎
• 16:24, 3 June 2011 (diff | hist) . . (0)‎ . . Pascal's Theorem ‎
• 16:02, 3 June 2011 (diff | hist) . . (+64)‎ . . 2006 Canadian MO Problems/Problem 5 ‎ (→‎Solution) (current)
• 15:59, 3 June 2011 (diff | hist) . . (+1,164)‎ . . 2006 Canadian MO Problems/Problem 5 ‎ (→‎Solution)
• 18:03, 2 June 2011 (diff | hist) . . (+586)‎ . . 2006 Canadian MO Problems/Problem 5 ‎ (→‎Problem)
• 16:02, 1 June 2011 (diff | hist) . . (0)‎ . . Pigeonhole Principle/Solutions ‎ (→‎M3)
• 16:01, 1 June 2011 (diff | hist) . . (+11)‎ . . Pigeonhole Principle ‎ (→‎Examples)
• 11:09, 1 June 2011 (diff | hist) . . (+21)‎ . . Pigeonhole Principle/Solutions ‎ (→‎M3)
• 11:07, 1 June 2011 (diff | hist) . . (-11)‎ . . Pigeonhole Principle ‎ (→‎Intermediate Problems)
• 11:06, 1 June 2011 (diff | hist) . . (+11)‎ . . Pigeonhole Principle ‎ (→‎Intermediate Problems)
• 11:04, 1 June 2011 (diff | hist) . . (+1)‎ . . Pigeonhole Principle/Solutions ‎ (→‎M3)
• 11:03, 1 June 2011 (diff | hist) . . (0)‎ . . Pigeonhole Principle/Solutions ‎ (→‎M3)
• 11:02, 1 June 2011 (diff | hist) . . (+781)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Intermediate)
• 10:55, 1 June 2011 (diff | hist) . . (-350)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:54, 1 June 2011 (diff | hist) . . (-34)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Olympiad)
• 10:53, 1 June 2011 (diff | hist) . . (+1)‎ . . Pigeonhole Principle ‎ (→‎Intermediate Problems)
• 10:53, 1 June 2011 (diff | hist) . . (+3)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:53, 1 June 2011 (diff | hist) . . (+416)‎ . . Pigeonhole Principle ‎ (→‎Intermediate Problems)
• 10:50, 1 June 2011 (diff | hist) . . (-365)‎ . . Pigeonhole Principle ‎ (→‎Olympiad Problems)
• 10:42, 1 June 2011 (diff | hist) . . (0)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:42, 1 June 2011 (diff | hist) . . (0)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:41, 1 June 2011 (diff | hist) . . (+402)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:39, 1 June 2011 (diff | hist) . . (-5)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:39, 1 June 2011 (diff | hist) . . (+5)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:39, 1 June 2011 (diff | hist) . . (-1)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:38, 1 June 2011 (diff | hist) . . (+236)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:21, 1 June 2011 (diff | hist) . . (+3)‎ . . Pigeonhole Principle ‎
• 10:20, 1 June 2011 (diff | hist) . . (0)‎ . . Pigeonhole Principle/Solutions ‎
• 10:20, 1 June 2011 (diff | hist) . . (-9)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:20, 1 June 2011 (diff | hist) . . (+5)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:19, 1 June 2011 (diff | hist) . . (+509)‎ . . Pigeonhole Principle/Solutions ‎ (→‎Introductory)
• 10:17, 1 June 2011 (diff | hist) . . (+1)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:17, 1 June 2011 (diff | hist) . . (+48)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 10:16, 1 June 2011 (diff | hist) . . (+26)‎ . . Pigeonhole Principle ‎ (→‎Introductory Problems)
• 18:00, 31 May 2011 (diff | hist) . . (-13)‎ . . 2010 AMC 12B Problems/Problem 19 ‎
• 17:55, 31 May 2011 (diff | hist) . . (+26)‎ . . 2001 USAMO Problems/Problem 3 ‎ (→‎Solution)
• 17:55, 31 May 2011 (diff | hist) . . (+1)‎ . . 2001 USAMO Problems/Problem 3 ‎ (→‎Solution)
• 17:52, 31 May 2011 (diff | hist) . . (+27)‎ . . 2001 USAMO Problems/Problem 3 ‎ (→‎Solution)
• 17:50, 31 May 2011 (diff | hist) . . (+103)‎ . . 2001 USAMO Problems/Problem 3 ‎ (→‎Solution)
• 17:49, 31 May 2011 (diff | hist) . . (+193)‎ . . 2001 USAMO Problems/Problem 3 ‎ (→‎Solution)

(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)