AN INSIGHT INTO THE DESCRIPTION OF THE CRYSTAL STRUCTURE FOR MIRKOVIC-VILONEN POLYTOPES

作者：Jiang, Yong^*; Sheng, Jie

来源：Transactions of the American Mathematical Society, 2017, 369(9): 6407-6427.

DOI：10.1090/tran/6918

• Mirkovic-Vilonen polytope
• crystal
• preprojective algebra
• diagram automorphism

We study the description of the crystal structure on the set of Mirkovic-Vilonen polytopes. Anderson and Mirkovic defined an operator and conjectured that it coincides with the Kashiwara operator. Kamnitzer proved the conjecture for type A and gave a counterexample for type C-3. He also gave an explicit formula to calculate the Kashiwara operator for type A. In this paper we prove that a part of the AM conjecture still holds in general, answering an open question of Kamnitzer (2007). Moreover, we show that although the formula given by Kamnitzer does not hold in general, it is still valid in many cases regardless of the type. The main tool is the connection between MV polytopes and preprojective algebras developed by Baumann and Kamnitzer.

• 出版日期2017-9
• 单位中国农业大学