由 K CONRAD 著作 · 被引用 5 次 — universal covering space of SL2(R) is the inside of a solid cylinder R × D (homeomorphic to R3). The degree-2 cover of SL(2,R) is an important group called ...
由 S Lang 著作 · 被引用 820 次 — SL2(R) gives the student an introduction to the infinite dimensional representation theory of semisimple Lie groups by concentrating on one example - SL2(R) ...