On the stability of regular algebras
classification
🧮 math.AG
math.RA
keywords
stabilityalgebrasregularbehrend-noohidimensionnon-commutativequadraticstable
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We characterize which quadratic regular algebras of global dimension 3 are stable in the sense of Behrend-Noohi. (This notion of stability is a non-commutative analogue of Hilbert stability.) We describe the quasi-projective stack of stable quadratic regular algebras of dimension 3. This provides the first non-trivial, non-commutative examples of stability a la Behrend-Noohi.
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