Coordinates of maximal roots of weakly non-negative unit forms

DOI10.4064/CM-78-2-163-193zbMath0936.16011OpenAlexW1025572287MaRDI QIDQ4236817

N. S. Golovachtchuk, Peter Dräxler, José Antonio de la Peña, Sergiy Ovsienko

Publication date: 1 March 2000

Published in: Colloquium Mathematicum (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/210609

zbMATH Keywords

rootsquadratic formspath algebrasEuler characteristicstame algebrasEuler formsrepresentation typesdirecting modulesweakly nonnegative unit forms

Mathematics Subject Classification ID

Representation type (finite, tame, wild, etc.) of associative algebras (16G60) Kac-Moody (super)algebras; extended affine Lie algebras; toroidal Lie algebras (17B67) Quadratic forms over global rings and fields (11E12) Representations of quivers and partially ordered sets (16G20) Quadratic and bilinear forms, inner products (15A63)

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Algebras whose Tits form accepts a maximal omnipresent root

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