Lyubeznik's finiteness conjecture for associated primes of Lyubeznik functors

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.

Sources & referencesView supporting material

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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