Morita duality and graded rings |
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| Authors: | Claudia Menini Angel Del Rio |
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| Affiliation: | 1. Dipartmento Di Matematica , Università Di L’Aquila , Via Roma, L’Aquila, I-67100, Italy;2. Departmento De Matemáticas , Universidad De Murcia , Murcia, 30001, Spain |
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| Abstract: | ABSTRACT We find representatives of all the equivalence classes of simple root systems (or r.e.s. for brevity) for the complex reflection groups G 12 , G 24 , G 25 and G 26 . Then we give representatives of all the congruence classes of (essential) presentations (or r.c.p. (r.c.e.p.) for brevity) for these groups by generators and relations. The method used in the paper is applicable to any finite (complex) reflection groups. |
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| Keywords: | Complex reflection groups Presentations Simple root systems |
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