The universal covering group of SL(2,ℝ)
In this section, we will describe the universal covering group of SL(2,ℝ) using the Maslov index. This construction is valid in the general case, and we will describe in detail the universal covering of the manifold of Lagrangian planes and the universal covering group of Sp(n,ℝ) in Appendix A.
KeywordsHalf Space Universal Covering Principal Determination Fractional Linear Transformation Maslov Index
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