Recent content by Raifeartagh

  1. R

    Graduate Relation between de Sitter and Poincare Groups

    Hi, I have a question about groups: What is the de Sitter group?? and how does it relate to poncaire's group? Thanks!
  2. R

    Graduate Is a Topological Action Defined by the Underlying Space?

    Hi, I have a simple question: What is a Topological Action?