2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76293In the paper one considers the local structure of the Fredholm joint spectrum of commuting $n$-tuples of operators. A connection between the spatial characteristics of operators and the algebraic invariant of the corresponding coherent sheaves is investigated. A notion of Weyl joint spectrum of commuting $n$-tuple is introduced.13 pagesOperator Algebras47A13, 47A11text