🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ634557· pop 19· linked from 124 articlesKilling forminvariant symmetric bilinear form defined on Lie algebra; trace of composition of two adjoint representationsAvailable in 18 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةCatalanHebrewConnectionsLie algebraEntityorthogonal groupEntityCategoriesLie algebrasLie groups