TY - JOUR T1 - The Differential Invariants of a Surface, and their Geometric Significance JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 201 SP - 329 EP - 402 PY - 1903/01/01/ UR - http://dx.doi.org/10.1098/rsta.1903.0019 M3 - doi:10.1098/rsta.1903.0019 AU - Forsyth, A. ER -