🌐EnglishEnglishBahasa IndonesiaDeutschEspañolNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийفارسی한국어中文日本語EntityQ3751720· pop 21· linked from 155 articlesidempotent matrixmatrix which, when multiplied by itself, yields itselfAvailable in 21 languagesEspañol中文日本語РусскийPortuguêsAlbanianBahasa IndonesiaBasqueCatalanFinnishGreekConnectionsblock matrixEntityeigenvectors and eigenvaluesEntityCategoriesLinear algebraMatrices (mathematics)Regression analysis