流形的示性类

characteristic class of a fibre bundle characteristic manifold characteristic of a field class of a curve take a class of characteristic class characteristic root of a matrix conductor of a class field class of a lattice group characteristic cohomology class characteristic of... differentiable manifold of class c characteristic of a logarithm field of vector on a manifold field of plane on a manifold characteristic equation of a matrix characteristic function of a set characteristic taste of a food repeated zeroes of a characteristic function external characteristic of a crime act a class