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Maths Problem: Complete Noughts and Crosses (Burnside's Lemma)

Duration: 07:39Views: 177.7KLikes: 3.1KDate Created: May, 2013

Channel: singingbanana

Category: Education

Tags: mathematicsreflectionsmathsburnside's lemmanoughts and crossesgroup theoryproblempuzzleorbitstic-tac-toemathrotationscombinatorics

Description: How many ways are there to complete a noughts and crosses board - an excuse to show you a little bit of Group Theory. Rotations, reflections and orbits - oh my! Burnside's Lemma en.wikipedia.org/wiki/Burnside_lemma Complete sequence oeis.org/A082963

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