🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsРусский한국어中文日本語EntityQ1139430· pop 8· linked from 44 articlesHurwitz's theoremtheorem on finite-dimensional unital real non-associative algebras endowed with a positive-definite quadratic formConnectionsoctonionEntitycomposition algebraEntityCategories1923 introductionsComposition algebrasHypercomplex numbersNon-associative algebrasOctonionsQuadratic formsRepresentation theoryTheorems about algebras