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arxiv: 1803.09301 · v1 · pith:72KPKANAnew · submitted 2018-03-25 · 🧮 math.KT · math.AC

Tate-Betti and Tate-Bass numbers

classification 🧮 math.KT math.AC
keywords tate-basstate-bettiinvariantsnumberscasecommutativedefinedual
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We define Tate-Betti and Tate-Bass invariants for modules over a commutative noetherian local ring R. Then we show the periodicity of these invariants provided that R is a hypersurface. In case R is also Gorenstein, we show that a finitely generated R-module M and its Matlis dual have the same Tate-Betti and Tate-Bass numbers.

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