Remark

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

Lie Groups and Lie Algebras, chapter VI, § 3. Exponential invariants

Since $x \neq 0$ means that the maximal support of $x$ is non-empty, Lemma 2 shows that $x \neq 0$ implies $xy \neq 0$ whenever $y$ admits a unique maximal term of the form $e^q$ .

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

Cited by

Nothing.

Cites

Lemma 2