Unlike the complex case, the natural algebraic and geometric definitions of tangentand conormal cones at singular points of real surfaces do not coincide. Nonetheless, these conesprovide valuable information about the...Unlike the complex case, the natural algebraic and geometric definitions of tangentand conormal cones at singular points of real surfaces do not coincide. Nonetheless, these conesprovide valuable information about the surface. Some properties of the algebraic and geometriccones are discussed.展开更多
文摘Unlike the complex case, the natural algebraic and geometric definitions of tangentand conormal cones at singular points of real surfaces do not coincide. Nonetheless, these conesprovide valuable information about the surface. Some properties of the algebraic and geometriccones are discussed.
