Subject: respnse in re: char classes Date: Wed, 13 Mar 2002 10:46:59 -0500 From: jim stasheff Response to 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." one interpretations (i'm sure there are others) triangulate the manifold the interior of each top simplex admits a full set of independent vector fields now try to extend over the n-l-skeleton then the n-2 skeleton until you can't go any further