Source: cirosantilli/every-lie-group-that-has-a-given-lie-algebra-is-the-image-of-an-homomorphism-from-the-universal-cover-group
= Every Lie group that has a given Lie algebra is the image of an homomorphism from the universal cover group
= Every Lie group that has a given Lie algebra is the image of an homomorphism from the universal cover group