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MIT PRIMES/Art of Problem Solving

CROWDMATH 2016: Pattern Avoidance

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Problem 9 Important Results
iamgauss   4
N Jan 11, 2019 by vkmathwhiz
As you may know, there is a thread for Problem 7 that lists all the important results discovered by CrowdMath for that problem. I thought it might be helpful to have a similar thread for the rest of the problems. Please add all important discoveries that have been made that are topical to Problem 9 here. Make sure to say where the theorems were proved and by whom. There are also threads for Problems 1-8. Thanks!
4 replies
iamgauss
Apr 29, 2016
vkmathwhiz
Jan 11, 2019
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