On Thu, 30 Nov 2017, Christian Stump wrote:

      How big is your n?

not very big, I aim for the biggest n for which I can loop through all 
permutations
of n and compute some numbers. I expect this to be between 10 and 14.
 
      "Almost all" finite posets are connected, so uniform distribution of
      all posets would work too for bigger n.


how would I get uniform distribution on all posets?

I meant that it won't help you to discard unconnected ones.

There is a code for generating posets, see attachment at https://trac.sagemath.org/ticket/14110 , but unfortunately it has not been integrated to Sage. I just tested and it takes about 2,2 seconds to generate 11-element posets (there are 46749427 of those) and 38 seconds for 12-element posets. I guess you could use that up to 14 elements.

--
Jori Mäntysalo

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