2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63364Generalizing a result of Arveson on finite width CSL algebras, we prove that finite width masa-bimodules satisfy spectral synthesis. Introducing a new class of masa-bimodules, we show that there exists a non-synthetic masa-bimodule, such that the maximal algebras over which it is a bimodule, are synthetic.16 pagesOperator AlgebrasFunctional Analysis47L05; 47L35text