Given a framed quiver, i.e., one with a frozen vertex associated with each mutable vertex, there is a concept of green mutation, as introduced by Keller. Maximal sequences of such mutations, known as maximal green sequences, are important in representation theory and physics as they have numerous applications, including the computations of spectrums of BPS states, Donaldson–Thomas invariants, tilting of hearts in derived categories, and quantum dilogarithm identities. In this paper, we study such sequences and construct a maximal green sequence for every quiver mutation equivalent to an orientation of a type A Dynkin diagram.
Bibliographical noteFunding Information:
The authors would like to thank T. Br??stle, M. Del Zotto, B. Keller, S. Ladkani, R. Patrias, V. Reiner, and H. Thomas for useful discussions. We also thank the referees for their careful reading and numerous suggestions. The authors were supported by NSF Grants DMS-1067183, DMS-1148634, and DMS-1362980.
- Cluster algebra
- Maximal green sequence