A characterization of positive unit forms

zbMath1012.11055MaRDI QIDQ1577417

Michael Barot

Publication date: 20 November 2002

Published in: Boletín de la Sociedad Matemática Mexicana. Third Series (Search for Journal in Brave)

zbMATH Keywords

Dynkin diagramspositive unit formsunit formsintegral quadratic formstree assemblage of complete graphs

Mathematics Subject Classification ID

Graphs and linear algebra (matrices, eigenvalues, etc.) (05C50) Quadratic forms (reduction theory, extreme forms, etc.) (11H55)

Related Items (6)

Serre type relations for complex semisimple Lie algebras associated to positive definite quasi-Cartan matrices ⋮ A Strong Gram Classification of Non-negative Unit Forms of Dynkin Type 𝔸r ⋮ Graphical characterization of positive definite non symmetric quasi-Cartan matrices ⋮ On the structure of loop-free non-negative edge-bipartite graphs ⋮ Incidence graphs and non-negative integral quadratic forms ⋮ A Graph Theoretical Framework for the Strong Gram Classification of Non-negative Unit Forms of Dynkin Type 𝔸n

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