Demazure, M. A,B,C,D,E,F, etc. (English) Zbl 0431.15020 Sémin. sur les singularités des surfaces, Cent. Math. Éc. Polytech., Palaiseau 1976-77, Lect. Notes Math. 777, 221-227 (1980). Reviewer: L. N. Vaserstein Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents MSC: 15A63 Quadratic and bilinear forms, inner products 11E16 General binary quadratic forms 51F15 Reflection groups, reflection geometries 14B05 Singularities in algebraic geometry Keywords:Coxeter matrix; Dynkin diagrams PDF BibTeX XML Full Text: DOI