No-go theorems for functorial localic spectra of noncommutative rings

B. van den Berg, C. Heunen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


Any functor from the category of C*-algebras to the category of locales that assigns to each commutative C*-algebra its Gelfand spectrum must be trivial on algebras of nxn-matrices for n at least 3. The same obstruction applies to the Zariski, Stone, and Pierce spectra. The possibility of spectra in categories other than that of locales is briefly discussed.
Original languageEnglish
Title of host publicationProceedings 8th International Workshop on Quantum Physics and Logic (QPL 2011)
EditorsBart Jacobs, Peter Selinger, Bas Spitters
Number of pages7
Publication statusPublished - 27 Oct 2011


Dive into the research topics of 'No-go theorems for functorial localic spectra of noncommutative rings'. Together they form a unique fingerprint.

Cite this