对于两个之间存在含奇性的同态映射的向量丛,建立了它们的示性数差值的局部化公式,并将这些结果推广到主丛和一列丛映射的情形上.
For two vector bundles admitting a homomorphism with singularities between them, a relative formula for the difference of the characteristic numbers of these two vector bundles is established.Then the results are generalized to the case of the principal bundles and a sequence of bundle homomorphisms.