dorsal/arxiv
View SchemaA PBW basis for Lusztig's form of untwisted affine quantum groups
| Authors | Fabio Gavarini |
|---|---|
| Categories | |
| ArXiv ID | q-alg/9706018 |
| URL | https://arxiv.org/abs/q-alg/9706018 |
| DOI | 10.1080/00927879908826468 |
| Journal | Communications in Algebra 27, no. 2 (1999), 903-918 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
Let $ \mathfrak{g} $ be an untwisted affine Kac-Moody algebra over the field $ K \, $, and let $ U_q(\mathfrak{g}) $ be the associated quantum enveloping algebra; let $ \mathfrak{U}_q(g) $ be the Lusztig's integer form of $ U_q(\mathfrak{g}) \, $, generated by $ q $-divided powers of Chevalley generators over a suitable subring $ R $ of $ K(q) \, $. We prove a Poincar\'e-Birkhoff-Witt like theorem for $ \mathfrak{U}_q(\mathfrak{g}) \, $, yielding a basis over $ R $ made of ordered products of $ q $-divided powers of suitable quantum root vectors.
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"abstract": "Let $ \\mathfrak{g} $ be an untwisted affine Kac-Moody algebra over the field\n$ K \\, $, and let $ U_q(\\mathfrak{g}) $ be the associated quantum enveloping\nalgebra; let $ \\mathfrak{U}_q(g) $ be the Lusztig\u0027s integer form of $\nU_q(\\mathfrak{g}) \\, $, generated by $ q $-divided powers of Chevalley\ngenerators over a suitable subring $ R $ of $ K(q) \\, $. We prove a\nPoincar\\\u0027e-Birkhoff-Witt like theorem for $ \\mathfrak{U}_q(\\mathfrak{g}) \\, $,\nyielding a basis over $ R $ made of ordered products of $ q $-divided powers of\nsuitable quantum root vectors.",
"arxiv_id": "q-alg/9706018",
"authors": [
"Fabio Gavarini"
],
"categories": [
"q-alg",
"math.QA"
],
"doi": "10.1080/00927879908826468",
"journal_ref": "Communications in Algebra 27, no. 2 (1999), 903-918",
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "A PBW basis for Lusztig\u0027s form of untwisted affine quantum groups",
"url": "https://arxiv.org/abs/q-alg/9706018"
},
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