Affine PBW bases and affine MV polytopes

Muthiah, D. and Tingley, P. (2018) Affine PBW bases and affine MV polytopes. Selecta Mathematica - New Series, 24(5), pp. 4781-4810. (doi: 10.1007/s00029-018-0436-9)

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Abstract

We show how affine PBW bases can be used to construct affine MV polytopes, and that the resulting objects agree with the affine MV polytopes recently constructed using either preprojective algebras or KLR algebras. To do this we first generalize work of Beck–Chari–Pressley and Beck–Nakajima to define affine PBW bases for arbitrary convex orders on positive roots. Our results describe how affine PBW bases for different convex orders are related, answering a question posed by Beck and Nakajima.

Item Type:Articles
Additional Information:D.M. was supported by a PIMS Postdoctoral Fellowship. P.T. was partially supported by NSF Grant DMS-1265555.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Muthiah, Dr Dinakar
Authors: Muthiah, D., and Tingley, P.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Selecta Mathematica - New Series
Publisher:Springer
ISSN:1022-1824
ISSN (Online):1420-9020
Published Online:14 September 2018

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