Bourbaki

Proposition 5

Tag 0A6Y, permanent. Cite it as [Bourbaki, Tag 0A6Y].

Lie Groups and Lie Algebras, chapter II, § 8. Convergence of the Hausdorff series (ultrametric case)

For x, y in G,

exp⁡A⋅exp⁡Ay=exp⁡Ah(x,y). \exp_A \cdot \exp_A y = \exp_A h(x, y).
eUeV=eH(U,V)e^{U e^V} = e^{H(U, V)} and hence
m∘(1+ϵ~,1+ϵ~)=(1+ϵ~)∘H~ m \circ (1 + \tilde{\epsilon}, 1 + \tilde{\epsilon}) = (1 + \tilde{\epsilon}) \circ \tilde{H}
in H~(A×A;A)\tilde{H}(A \times A; A) (where m denotes multiplication on A). The proposition then follows from Proposition 2, Lemma 3 and Differentiable and Analytic Manifolds, R, 4.1.5.

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

Cited by

Nothing.

Cites

Transcribed from the printed volume. Not translated.