Abstract
We prove the positivity conjecture for all skew-symmetric cluster algebras.
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@article{ADSS, mrkey = {2862382},
author = {Assem, Ibrahim and Dupont, Gr{é}goire and Schiffler, Ralf and Smith, David},
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[LS3]
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title = {Positivity for cluster algebras of rank 3},
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NOTE={first version},
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