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Ciro Santilli @cirosantilli 37

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 Incoming links: Universal covering group

Every Lie algebra has a unique single corresponding simply connected Lie group  Updated 2025-05-29  +Created 1970-01-01
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This simply connected is called the universal covering group.
E.g. in the case of SO(3) and SU(2), SU(2) is simply connected, but SO(3) is not.
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