Semicanonical moving frame of the hypersurface in a unimodular 4-dimensional affine space Libuše Marková (1971) Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica-Physica-Chemica Similarity:
Natural functions on T * T ( r ) and T * T r * Włodzimierz M. Mikulski (1995) Archivum Mathematicum Similarity: We determine all natural functions on T * T ( r ) and T * T r * .