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On Archimedean Decompositions of Linearly Ordered Fields
On Archimedean Decompositions Linearly Ordered Fields
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2010/11/22
In 1907, Hans Hahn proved the remarkable fact that any ordered group can be embedded in an ordered real function space. This set the stage for work on ordered groups and fields, and this area receive...
Signs in the cd-index of Eulerian partially ordered sets
the cd-index Eulerian partially ordered sets
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2010/10/29
A graded partially ordered set is Eulerian if every interval has the same number of elements of even rank and of odd rank. Face lattices of convex polytopes are Eulerian. For Eulerian partially order...