Carlitz–Schanuel conjecture over Tate algebras

Let A=Fq[θ]A=\mathbb{F}_q[\theta], let Ks=Fp(θ,t1,,ts)K_s=\mathbb{F}_p(\theta,t_1,\ldots,t_s), and let Ks\mathbb{K}_s be the ambient field introduced for the extension of the Carlitz exponential. If u1,,unKsu_1,\ldots,u_n\in\mathbb{K}_s are linearly independent over A[t1,,ts]A[t_1,\ldots,t_s], then

trdegKsKs(u1,,un,expC(u1),,expC(un))n.\operatorname{trdeg}_{K_s}K_s(u_1,\ldots,u_n,\exp_C(u_1),\ldots,\exp_C(u_n))\geq n.

Carlitz–Schanuel conjecture over Tate algebras. The displayed transcendence-degree inequality holds.

This generalizes Denis's conjecture to the Tate-algebra setting. The source presents it as a conjectural statement, with no resolution supplied.

Sources & referencesView supporting material

Primary source

F Pellarin, “On a variant of Schanuel conjecture for the Carlitz exponential”, arXiv:1610.04048 (2017).

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