[seqfan] Re: what are "sorted tuples" called?

William Keith william.keith at gmail.com
Tue May 5 19:22:08 CEST 2020

These are partitions into exactly three parts, with sizes at most 4.  By
subtracting one from each part to allow zeroes, you get partitions into at
most three parts, of size at most 3, which are counted by the q-binomial
coefficient [6 choose 3]_q.

Normally partitions are written in decreasing order of size.


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