Subject: question about char. classes Date: Wed, 13 Mar 2002 15:23:16 +0400 (IRT) From: rezazadegan@math.sharif.edu There is a sentense in "M. Atyiah Collected works, vol 3 ,p77" about charecteristic classes wich says: "Roughly speaking one considers the cycles where a given number of vector fields becomes linearly dependent." What is the meaning of this sentence?