Discretized ranking-function conjecture for purely inseparable hypersurface singularities

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Let Π\Pi be the discretization map from the paper, and let f0,…,f25f_0,\ldots,f_{25} be the intrinsic invariants used to construct a five-component raw rank function R=(c1,c2,c3,c4,c5)R=(c_1,c_2,c_3,c_4,c_5). A bounded-delay ranking function is a discretized rank whose ranking improvements occur within a uniformly bounded number of steps. Discretized ranking-function conjecture. There exists such an RR, built from f0,…,f25f_0,\ldots,f_{25}, for dimension-44, characteristic-33 monic purely inseparable hypersurface singularities, with

Π∘R\Pi\circ R

a bounded-delay ranking function. Moreover, the explicit ranker R100\mathcal R_{100} generalizes to families obtained by adding further mixed terms of arbitrarily high degree. This conjecture proposes a uniform ranking mechanism for the canonical blow-up process, but the supplied text gives only computational evidence and does not establish either the existence claim or the asserted generalization.

References

Primary source

Gergely Bérczi, “Evolving Ranking Functions for Canonical Blow-Ups in Positive Characteristic”, arXiv:2602.06553 (2026).

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