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math.CO2009★ 23 cited
Positivity for cluster algebras from surfaces
Gregg Musiker, Ralf Schiffler, Lauren Williams
We give combinatorial formulas for the Laurent expansion of any cluster variable in any cluster algebra coming from a triangulated surface (with or without punctures), with respect…
math.CO2008★ 6 cited
Tableaux Combinatorics for the Asymmetric Exclusion Process II
Sylvie Corteel, Lauren Williams
The results of this paper have been subsumed by those of our new paper arXiv:0910.1858