Decomposition matrices for d-Harish-Chandra series: the exceptional rank two cases

We calculate all decomposition matrices of the cyclotomic Hecke algebras of the rank two exceptional complex reflection groups in characteristic zero. We prove the existence of canonical basic sets in the sense of Geck–Rouquier and show that all modular irreducible representations can be lifted to t...

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Veröffentlicht in:LMS journal of computation and mathematics 2011-11, Vol.14, p.271-290
Hauptverfasser: Chlouveraki, Maria, Miyachi, Hyohe
Format: Artikel
Sprache:eng
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Zusammenfassung:We calculate all decomposition matrices of the cyclotomic Hecke algebras of the rank two exceptional complex reflection groups in characteristic zero. We prove the existence of canonical basic sets in the sense of Geck–Rouquier and show that all modular irreducible representations can be lifted to the ordinary ones.
ISSN:1461-1570
1461-1570
DOI:10.1112/S1461157010000306