Let G be a connected tight single Lie-group and g be the Lie algebra of G. Let Aut(G) be the self-isomorphism group of G, Aut (g) the self-isomorphism of g, and Aut(g) the self- isomorphism group of Aut(g). All concomitant representations of the form Ad(g) (g = G) form the inner self-isomorphism group Ad(g) of g. Let (., .) be the Ad(g)-invariant positive definite inner product of Ad(g) on g, g. the invariant positive definite inner product, b the Cartan subalgebra of g, AC b the root system of (y, b), and W the Weyl group corresponding to A. Determine if the following proposition is correct, and prove your conclusion. - Aut(G) = Aut(g). Aut(g) = Ad(g). - If & € Aut(g) and (b) = b, then 6 € W.
Let G be a connected tight single Lie-group and g be the Lie algebra of G. Let Aut(G) be the self-isomorphism group of G, Aut (g) the self-isomorphism of g, and Aut(g) the self- isomorphism group of Aut(g). All concomitant representations of the form Ad(g) (g = G) form the inner self-isomorphism group Ad(g) of g. Let (., .) be the Ad(g)-invariant positive definite inner product of Ad(g) on g, g. the invariant positive definite inner product, b the Cartan subalgebra of g, AC b the root system of (y, b), and W the Weyl group corresponding to A. Determine if the following proposition is correct, and prove your conclusion. - Aut(G) = Aut(g). Aut(g) = Ad(g). - If & € Aut(g) and (b) = b, then 6 € W.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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These questions are from a branch of mathematics known as Lie group theory. This is a field of study that combines algebraic structures (groups) with differential structures (manifolds). Lie groups play a crucial role in many areas of mathematics and physics, including but not limited to differential equations, quantum mechanics, and general relativity. In this theory, a "Lie algebra" is a way of describing a Lie group using vector spaces and a specific binary operation "[ , ]" to capture properties of the Lie group.
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