Abstract. We construct all planar semimodular lattices in three simple steps from the direct product of two chains.
AMS Subject Classification
(1991): 06C10, 06D05
Keyword(s):
Semimodular lattice,
planar,
distributive,
modular
Received November 28, 2006, and in revised form February 10, 2007. (Registered under 6445/2009.)
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