Geodesic
Nonnegativity for Cartan–Tits and Kac–Moody Forms
Matematičeskie zametki, Tome 93 (2013) no. 5, pp. 736-740

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Forms generalizing Cartan–Tits and Kac–Moody forms are considered. Necessary conditions for these forms to be nonnegative are found.
Mots-clés : Cartan–Tits form
Keywords: Kac–Moody form, form with average diagonal dominance, nonnegative form, positive form, Coxeter graph. 
V. A. Kolmykov. Nonnegativity for Cartan–Tits and Kac–Moody Forms. Matematičeskie zametki, Tome 93 (2013) no. 5, pp. 736-740. http://geodesic.mathdoc.fr/item/MZM_2013_93_5_a7/
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