TY - BOOK AU - Sharpe,R.W. TI - Differential geometry: Cartan's generalization of Klein's Erlangen program SN - 9780387947327 U1 - 516.36 PY - 1997/// CY - New York PB - Springer-Verlag KW - Riemannian geometry KW - Mobius geometry KW - Projective geometry ER -