Frobenius algebras of stanley-reisner rings and maximal free pairs
- ALBERTO F. BOIX
- SANTIAGO ZARZUELA
ISSN: 1132-6360
Año de publicación: 2018
Título del ejemplar: Proceedings of the XVI EACA Zaragoza Encuentros de Algebra Computacional y Aplicaciones
Número: 43
Páginas: 87-90
Tipo: Artículo
Otras publicaciones en: Monografías de la Real Academia de Ciencias Exactas, Físicas, Químicas y Naturales de Zaragoza
Resumen
It is known that the Frobenius algebra of the injective hull of the residue field of a formal power series ring modulo a squarefree monomial ideal can be only principally generated or infinitely generated as algebra over its degree zero piece, and that this fact can be read off in the corresponding simplicial complex; in the infinite case, we exhibit a 1–1 correspondence between potential new generators appearing on each graded piece and certain pairs of faces of such a simplicial complex, that we call maximal free pairs.