Jet-point counting conjecture for varieties over finite fields

Let \bfZ\bfZ be a variety over \F\F_\ell, and let Jm(\bfZ)J_m(\bfZ) denote its mm-th jet scheme. Assume that there is a constant CC such that

m0,dimJm(\bfZ)mdim(\bfZ)+C.\forall m\geq 0,\qquad \dim J_m(\bfZ)\leq m\dim(\bfZ)+C.

Jet-point counting conjecture. Then there exists a constant DD such that

m0,#Jm(\bfZ)(\F)DmDmdim(\bfZ).\forall m\geq 0,\qquad \#J_m(\bfZ)(\F_\ell)\leq Dm^D\ell^{m\dim(\bfZ)}.

This relates a uniform dimension bound for the jet schemes to a polynomially controlled finite-field point count. The source gives no resolution status beyond stating the claim.

Sources & referencesView supporting material

Primary source

Avraham Aizenbud, Dmitry Gourevitch, David Kazhdan and Eitan Sayag, “The jet schemes of the nilpotent cone of gl_n over F_and analytic properties of the Chevalley map”, arXiv:2602.16384 (2026).

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