2017年6月
AN ALGEBRAIC STUDY OF EXTENSION ALGEBRAS
AMERICAN JOURNAL OF MATHEMATICS
- 巻
- 139
- 号
- 3
- 開始ページ
- 567
- 終了ページ
- 615
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- 出版者・発行元
- JOHNS HOPKINS UNIV PRESS
We present simple conditions which guarantee a geometric extension algebra to behave like a variant of quasi-hereditary algebras. In particular, standard modules of affine Hecke algebras of type BC, and the quiver Schur algebras are shown to satisfy the Brauer-Humphreys type reciprocity and the semi-orthogonality property. In addition, we present a new criterion.of purity of weights in the geometric side. This yields a proof of Shoji's conjecture on limit symbols of type B [T. Shoji, Adi). Stud. Pure Math. 40 (2004)], and the purity of the exotic Springer fibers [S. Kato, Duke Math. J. 148 (2009)]. Using this, we describe the leading terms of the C-infinity-realization of a solution of the Lieb-McGuire system in the appendix. In [S. Kato, Duke Math. J. 163 (2014)], we apply the results of this paper to the KLR algebras of type ADE to establish Kashwara's problem and Lusztig's conjecture.
- リンク情報
- ID情報
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- ISSN : 0002-9327
- eISSN : 1080-6377
- Web of Science ID : WOS:000401050400001