🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoPortuguêsTürkçeРусский한국어中文日本語EntityQ2725319· pop 13· linked from 50 articlesintegral geometrytheory of measures on a geometrical space invariant under the symmetry group of that spaceAvailable in 13 languagesEspañolFrançaisDeutsch中文РусскийPortuguêsItalianoArmenianBahasa IndonesiaRomanianConnectionsmathematicsEntityareaEntityCategoriesIntegral geometry