I think that Sage documentation should contain a phrase "height of poset" somewhere.

If P is a poset, it can be computed with P.rank()+1. (Or, maybe, P.rank() --- which one is definition of height?)

Should there be a .height() function? Nathann Cohen said that probably, but I should ask about it on this list. Travis Scrimshaw said "I wouldn't think of using rank for a non-ranked poset".

So, to make a new small function or to add a note to documentation?

--
Jori Mäntysalo

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