EntityQ188211· pop 34· linked from 336 articlesinvariantSign in to saveproperty of mathematical objects that remains unchanged under certain transformations applied to the objectsConnectionslinear mapEntityeigenvectors and eigenvaluesEntitycomplex numberEntitynumber lineEntitygroup actionEntityRiemannian manifoldEntitychange of basisEntitycorrectnessEntitymathematicsEntitygeometryEntitycomputer scienceEntityalgebraEntityPiConcepttriangleEntityareaEntityInternational Standard Book NumberEntitytrigonometryEntityprogramming languageEntitycircleEntityangleEntityCategoriesMathematical terminology