n universal bundle是什么意思

用法例句

Assume that (E ,j,X) is a Lip n-microbundle, {U1,U2} is an open cover of X,ξ= (E1, j, U1) a Lip n-bundle and ξ2 = (E2 = U2×Rn,P1,U2) is the standard trivial Lip n-bundle.

设μ=(E’,j,X)是Lip n-丛,{U1,U2}是X的开复盖,ξ1=(E1,j1,U1)是Lip n-丛,且ξ2=(E2=U2×Rn,P1,U2)是标准平凡Lip n-丛。