remakes Chern-Simon theory

http://arxiv.org/abs/0808.2507

Is a secondary source written by Daniel S. Freed
(Submitted on 19 Aug 2008 (v1), last revised 28 Oct 2008 (this version, v2)

This source tell us :In the late 1980s Witten used the Chern-Simons form of a connection to construct new invariants of 3-manifolds and knots, recovering in particular the Jones invariants.
it help us easy to understand what is useful to math.