C. Löfwall

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20122025

most citedA Gorenstein numerical semi-group ring having a transcendental series of Betti numbers

4 citations · 7 across the 4 of their papers we have counts for

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math.AC2025

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Ralf Fröberg, Clas Löfwall

We study forms $I = (f_{1}, \dots, f_{r})$ , $° f_{i} = d_{i}$ , in $F$ which is the free associative algebra $k ⟨ x_{1}, \dots, x_{n} ⟩$ or the polynomial ring $k [x_{1}, \dots, x_{n}]$ , where $k$ …

math.AC2012★ 4 cited

A Gorenstein numerical semi-group ring having a transcendental series of Betti numbers

Clas Löfwall, Samuel Lundqvist, Jan-Erik Roos

We prove in particular that the Gorenstein numerical semigroup ring generated by (36,48,50,52,56,60,66,67,107,121,129,135) has a transcendental series of Betti numbers. The methods…