Name: Zhou Yu Date: 06/23/08-12:38:42 AM Z
I am a beginer.Last week I read The Feynman Lectures on Physics.I thought it is important to total all the path,which contains one loop topologies,two loop topologies,and so on.So we should union one loop topologies,two loop topologies, and so on.(Maybe what I think is wrong)But I don’t find the function about union the topologies.How can I do?