I am an independent software developer and former college math instructor. Still trying to find the answers to life's persistent questions.
1385 days ago
Start w/ (0,1,x,y) & apply the map (a,b,c,d)->(|a-b|,|b-c|,|c-d|,|d-a|) until (0,0,0,0) reached. # of iterations?
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