most citedGreen formula in Hall algebras and cluster algebras

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math.QA2007

Green's formula with $\bbc^{*}$-action and Caldero-Keller's formula for cluster algebras

Jie Xiao, Fan Xu

It is known that Green's formula over finite fields gives rise to the comultiplications of Ringel-Hall algebras and quantum groups (see\cite{Green}, also see \cite{Lusztig}). In th…