Weights conjecture for intersection cohomology of rigid-analytic varieties
Let be a -adic local field with residue field of cardinality , let be a quasi-compact and quasi-separated rigid-analytic -variety of dimension , and let be a prime number. Let and denote the relevant generic- and special-fiber Galois groups, and let and denote compactly supported and ordinary intersection cohomology. Weights conjecture. For any projecting to geometric Frobenius in and any integer , the eigenvalues of on
are -Weil numbers of weights at most , and the eigenvalues on
are -Weil numbers of weights at least . In particular, when is smooth and proper, the eigenvalues on have weights between and . This conjecture extends known weight bounds from algebraic varieties to general quasi-compact quasi-separated rigid-analytic varieties; the smooth proper algebraic case is noted in the source as known via alterations and semistable results, while the analytic assertion remains open.
References
Primary source
David Hansen and Bogdan Zavyalov, “Arithmetic Properties Of -adic Étale Cohomology and Nearby Cycles of Rigid-Analytic Spaces”, arXiv:2301.01800 (2025).
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