[Partially ordered sets][1] (*posets*) are important objects in combinatorics (with many connections to https://gilkalai.wordpress.com/2019/02/05/extremal-combinatorics-v-posets/ and to algebraic combinatorics) and also in other areas of mathematics. They are also related to *sorting* and to other questions in the theory of computing. I am asking for a list of open questions and conjectures about posets.


  [1]: https://en.wikipedia.org/wiki/Partially_ordered_set