The Centers of the Universal Enveloping Algebras for Contracted Lie Groups.Wolak, Mathew.
Abstract: Lie group contraction is a process by which Lie groups are ''flattened out''. This thesis finds the algebra of bi-invariant differential operators (identified with the center of the universal enveloping algebra) for the Galilean group (which is a contraction of the Poincare group).
- Tufts University. Department of Mathematics.
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