isolated singular point造句

• One intersects the complex hypersurface with a hypersphere, centred at the isolated singular point, and with sufficiently small radius so that it does not enclose, nor encounter, any other singular points.
• Furthermore, this compact manifold with boundary, which is known as the " Milnor fiber " ( of the isolated singular point of V _ f at the origin ), is diffeomorphic to the intersection of the closed ( 2n + 2 )-ball ( bounded by the small ( 2n + 1 )-sphere ) with the ( non-singular ) hypersurface V _ g where g = f-e and e is any sufficiently small non-zero complex number.