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 Mar11 awarded Autobiographer Nov25 awarded Revival Jul8 comment Undistinguishable elements in posets Thanks again for pointing this out! Jul8 accepted Undistinguishable elements in posets Jul8 comment Undistinguishable elements in posets @YannPequignot: You are entirely right, my "indistinguishable sets" are exactly this notion of interval, thanks a lot for pointing this out. Please post your comment as an answer and I will accept it. Thanks! :) Jul2 awarded Curious Jul1 awarded Yearling Jul1 asked Undistinguishable elements in posets May20 awarded Scholar May20 accepted Extending a partial order to antichains May13 comment Small posets with prescribed number of linear extensions @talegari: No I mean that their sizes (number of elements) should be $O(\log n)$. May13 revised Small posets with prescribed number of linear extensions more precise phrasing May13 asked Small posets with prescribed number of linear extensions May15 awarded Commentator May15 comment Prove (without quoting any theorems) that polynomials on [0,1] are continous I don't understand the point of the first question. Shouldn't you replace $P([0, 1])$ by $C^0[0, 1]$ in this question? You can then combine both questions to show the desired result. (What your version of the first question asks you to prove is true but I fail to see where you will need to use it.) May14 awarded Caucus Feb12 comment Width of a product of chains Thanks a lot for this detailed answer! Is this new, or are those results from an existing source? Feb11 revised Number of upper sets of size $n$ in a finite tree +terminology Feb10 comment Product-Decomposition of distributive lattices Feb10 asked Width of a product of chains