EntityQ2725319· pop 13· linked from 50 articlesintegral geometrySign in to savetheory of measures on a geometrical space invariant under the symmetry group of that spaceConnectionsmathematicsEntityareaEntityInternational Standard Book NumberEntitylengthEntityparadoxEntityprobability theoryEntitycurveEntityAndrey KolmogorovEntityFelix KleinEntityrandomnessEntityexpectationEntityCambridge University PressEntitystochastic processEntitymeasureEntitypositive real numberEntityIsrael GelfandEntityLie groupEntitycompact spaceEntityAmerican Mathematical SocietyEntitysymmetry groupEntityCategoriesIntegral geometry