Lyubeznik's finiteness conjecture for associated primes of Lyubeznik functors

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Let RR be a regular ring. A Lyubeznik functor on RR is a functor built from local cohomology functors with support in locally closed subsets of Spec⁡(R)\operatorname{Spec}(R), as in Lyubeznik's definition.

Lyubeznik's conjecture. For every Lyubeznik functor T( ⋅ )T(\,\cdot\,) on RR, the module T(R)T(R) has finitely many associated prime ideals.

This is a generalization of the Huneke–Lyubeznik conjecture, since Lyubeznik functors include compositions of local cohomology functors. The paper proves new cases, while the conjecture remains open in general.

References

Primary source

Takumi Murayama, “Finiteness of associated primes for local cohomology modules of excellent locally unramified regular rings of finite Krull dimension”, arXiv:2506.17875 (2025).

Additional references

4 papers in this index state this conjecture (2013–2025). The statement above is taken from the most recent of them; the others are arXiv:1512.05695, arXiv:1512.05686, arXiv:1304.4692.

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