Example

Tag 09X3, permanent. Cite it as [Bourbaki, Tag 09X3].

Lie Groups and Lie Algebras, chapter I, § 4. Nilpotent Lie algebras

The algebra $\mathfrak{n}(n, K)$ (§ 1, no. 2, Example 2 (3)) is nilpotent.

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

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