The smooth-normalization conjecture for varieties

Let XX be an algebraic or analytic variety. A smooth blowing-up is a blowing-up with smooth centre, and it is admissible when it satisfies the local normal-crossings and Hilbert–Samuel conditions specified in the source. Write XncX^{\mathrm{nc}} for the normal-crossings locus of XX. Smooth-normalization conjecture. There is a finite composite of admissible smooth blowings-up

σ:XX,\sigma:X'\to X,

preserving XncX^{\mathrm{nc}}, such that XX' has smooth normalization. In the analytic case, the morphism is understood over a given relatively compact open subset of XX. This would provide a controlled partial desingularization while leaving the normal-crossings locus unchanged; the paper presents it as the main conjectural goal and does not establish it in full generality.

Sources & referencesView supporting material

Primary source

André Belotto da Silva, Edward Bierstone and Ramon Ronzon Lavie, “Partial desingularization”, arXiv:2211.15713 (2023).

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