The bounded perfection exponent conjecture for Anderson modules

From papers

Let EE be an Anderson AA-module over a field RR, and let b(E)b(E) be an exponent such that the residue-in-τ\tau pairing factors through R1/qb(E)R^{1/q^{b(E)}}. Let w(E)w(E) range over the weights of EE. Bounded perfection exponent conjecture. One may choose b(E)b(E) so that

b(E)w(E)<1|b(E)w(E)|<1

for all weights w(E)w(E) of EE.

This conjecture proposes a uniform bound on the exponent needed for the residue-in-τ\tau pairing to descend from the perfection of RR. It is motivated by several examples, but the source provides no resolution.

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Sources & referencesView supporting material

Primary source

Quentin Gazda and Andreas Maurischat, “Pairing Anderson motives via formal residues in the Frobenius endomorphism”, arXiv:2504.01926 (2025).

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