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Let $A$ be a finite dimensional commutative algebra. We can assume that it is local.

Question: Which such $A$ have the property that every finite dimensional $A$-module has complexity at most 1? (This should be equivalent to the simple module having complexity equal to one or equivalently bounded Betti numbers)

Note that a module has complexity at most one if and only if the terms in a minimal projective resolution have bounded dimensions.

Examples include $A=K[x]/(x^n)$. Do you know other examples?

Let $A$ be a finite dimensional commutative algebra. We can assume that it is local.

Question: Which such $A$ have the property that every finite dimensional $A$-module has complexity at most 1? (This should be equivalent to the simple module having complexity equal to one or equivalently bounded Betti numbers)

Note that a module has complexity at most one if and only if the terms in a minimal projective resolution have bounded dimensions.

Examples include $A=K[x]/(x^n)$.

Let $A$ be a finite dimensional commutative algebra. We can assume that it is local.

Question: Which such $A$ have the property that every finite dimensional $A$-module has complexity at most 1? (This should be equivalent to the simple module having complexity equal to one or equivalently bounded Betti numbers)

Note that a module has complexity at most one if and only if the terms in a minimal projective resolution have bounded dimensions.

Examples include $A=K[x]/(x^n)$. Do you know other examples?

Source Link
Mare
  • 26.5k
  • 6
  • 25
  • 104

Commutative algebras with modules of small complexity

Let $A$ be a finite dimensional commutative algebra. We can assume that it is local.

Question: Which such $A$ have the property that every finite dimensional $A$-module has complexity at most 1? (This should be equivalent to the simple module having complexity equal to one or equivalently bounded Betti numbers)

Note that a module has complexity at most one if and only if the terms in a minimal projective resolution have bounded dimensions.

Examples include $A=K[x]/(x^n)$.