Heath, Lenwood S.Pemmaraju, Sriram V.2013-06-192013-06-191992http://hdl.handle.net/10919/19732The stacknumber (queuenumber) of a poset is defined as the stacknumber (queuenumber) of its Hasse diagram viewed as a directed acyclic graph. Upper bounds on the queuenumber of a poset are derived in terms of its jumpnumber, its length, its width, and the queuenumber of its covering graph. A lower bound of is shown for the queuenumber of the class of planar posets. The queuenumber of a planar poset is shown to be within a small constant factor of its width. The stacknumber of posets with planar covering graphs is shown to be . These results exhibit sharp differences between the stacknumber and queuenumber of posets as well as between the stacknumber (queuenumber) of a poset and the stacknumber (queuenumber) of its covering graph.application/pdfenIn CopyrightTechnical reportTR-92-31http://eprints.cs.vt.edu/archive/00000311/01/TR-92-31.pdf