Automorphisms of even unimodular lattices and equivariant Witt groups
| Authors |
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| Publication date | 2020 |
| Journal | Journal of the European Mathematical Society |
| Volume | Issue number | 22 | 11 |
| Pages (from-to) | 3467-3490 |
| Organisations |
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| Abstract | We characterize the irreducible polynomials that occur as the characteristic polynomial of an automorphism of an even unimodular lattice of a given signature, generalizing a theorem of Gross and McMullen. As part of the proof, we give a general criterion in terms of Witt groups for a bilinear form equipped with an action of a group G over a discretely valued field to contain a unimodular G-stable lattice. |
| Document type | Article |
| Note | © 2020 EMS Publishing House. All rights reserved. |
| Language | English |
| Published at | https://doi.org/10.4171/JEMS/991 |
| Other links | https://www.scopus.com/pages/publications/85095794413 |
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Automorphisms of even unimodular lattices and equivariant Witt groups
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