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arXiv · 2511.17862

On a Computational Approach to the Nash Blowup Problem

Federico Castillo·Daniel Duarte·Maximiliano Leyton-Álvarez·Alvaro Liendo
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Abstract

In this paper we describe the implementation that led to the counterexamples to the Nash blowup conjectures recently discovered by the authors. We also provide new examples of toric varieties with prescribed singularities that are not resolved by the normalized Nash blowup, including cyclic quotient singularities, toric hypersurfaces, and Q-factorial Gorenstein singularities. In addition, we report extensive computational evidence: tens of thousands of two-dimensional toric varieties that are resolved by iterating the Nash blowup, and millions of three-dimensional toric varieties that are resolved by iterating the normalized Nash blowup. This provides positive evidence for the remaining open cases of the conjectures.

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Federico Castillo, Daniel Duarte, Maximiliano Leyton-Álvarez, Alvaro Liendo. 2025-11-22. On a Computational Approach to the Nash Blowup Problem. https://arxiv.org/abs/2511.17862

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