Bourbaki

Exercise 4, § 4

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

Spectral Theories, I, p. 173

There exists a commutative non-unital and nonzero Banach algebra such that X(A)\mathsf{X}(A) is compact.

Solution

No solution has been written yet.

Cited by

Nothing.

Cites

Nothing.

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