Exercise 7.1.5

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According to formula (4), we have r(4,3) = N(4,3) + N(4,2) + N(4,1) + N(4,0) = 4 + 6 + 4 + 1 = 15. Folding R3 four times we have 15 flat subsets.

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2020-03-20 00:00
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