Bourbaki

Corollary

Tag 02NC, permanent. Cite it as [Bourbaki, Tag 02NC].

Théories spectrales, chapter II, § 3. Sous-espaces invariants

If a closed ideal I of L1(G)L^1(G) is contained in a single regular maximal ideal, then I itself is regular maximal.

Bourbaki sets the proof directly after the statement, and the corpus does not separate them, so what is above is the statement and its proof together.

Cited by

Nothing.

Cites

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Machine translation of the English, by gpt-5.4, gpt-5-6-mini, gpt-5-mini, against glossary version 34. Not checked by a person. That model is a cut down version of the one the rest of this language was written by.