2-blocks and 2-modular characters of the Chevalley groups G2(q)
We first determine the distribution of the ordinary irreducible characters of the exceptional Chevalley group G<sub>2</sub>(q), q odd, into 2-blocks. This is done by using the method of central characters. Then all but two of the irreducible 2-modular characters are determined. The resul...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1992
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| In: |
Mathematics of computation
Year: 1992, Jahrgang: 59, Heft: 200, Pages: 645-672 |
| ISSN: | 1088-6842 |
| DOI: | 10.2307/2153082 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.2307/2153082 Verlag, lizenzpflichtig, Volltext: https://www.jstor.org/stable/2153082 
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| Verfasserangaben: | Gerhard Hiss, Josephine Shamash |
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| 520 | |a We first determine the distribution of the ordinary irreducible characters of the exceptional Chevalley group G<sub>2</sub>(q), q odd, into 2-blocks. This is done by using the method of central characters. Then all but two of the irreducible 2-modular characters are determined. The results are given in the form of decomposition matrices. The methods here involve concepts from modular representation theory and symbolic computations with the computer algebra system MAPLE. As a corollary, the smallest degree of a faithful representation of G<sub>2</sub>(q), q odd, over a field of characteristic 2 is obtained. | ||
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