TY - JOUR AU - Valdés Morales, Antonio PY - 1996 DO - 10.1017/S030500410007420X SN - 0305-0041 UR - https://hdl.handle.net/20.500.14352/58676 T2 - Mathematical Proceedings of the Cambridge Philosophical Society AB - A differential invariant of a G-structure is a function which depends on the r-jet of the G-structure and such that it is invariant under the natural action of the pseudogroup of diffeomorphisms of the base manifold. The importance of these objects is... LA - eng M2 - 341 PB - Cambridge Univ Press KW - R*-structure KW - projective parallelism KW - bundle of linear frames KW - bundle of projective frames KW - three-web KW - functorial connection KW - differential invariants KW - equivalence problem TI - Differential invariants of R ∗-structures TY - journal article VL - 119 ER -