Kollár–Takagi–Tanaka–Witaszek–Yasuda–Yoshikawa log-resolution lifting conjecture for log del Pezzo pairs

Let (X,Δ)(X,\Delta) be a log del Pezzo pair over a perfect field of characteristic p>5p>5, with standard coefficients. A log resolution is a resolution f ⁣:YXf\colon Y\to X such that the relevant boundary and exceptional divisors have simple normal crossings. Then there exists a log resolution f ⁣:YXf\colon Y\to X of (X,Δ)(X,\Delta) such that the pair

(Y,f1Δ+Exc(f))\left(Y,f^{-1}_*\Delta+\operatorname{Exc}(f)\right)

lifts to W(k)W(k), the ring of Witt vectors of the field kk. Kollár–Takagi–Tanaka–Witaszek–Yasuda–Yoshikawa's conjecture. Every such pair admits a log resolution whose resolved pair lifts to the Witt vectors. This conjecture is recalled from the cited source; the supplied text gives no resolution status.

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Primary source

Tatsuro Kawakami, Teppei Takamatsu, Hiromu Tanaka, Jakub Witaszek, Fuetaro Yobuko and Shou Yoshikawa, “Quasi-F-splittings in birational geometry II”, arXiv:2302.13235 (2024).

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