Zeng's deflation conjecture for ultrasingular irreducible components
Zeng's deflation conjecture for ultrasingular irreducible components
Let be a polynomial system, let denote its solution set, and let be a -dimensional ultrasingular irreducible component. Thus there is a nonempty Zariski open set consisting of geometric smooth points and a constant such that
for every . For a solution , let be its deflation sequence, and call this sequence regular when its stabilized value equals the local dimension.
Zeng's deflation conjecture. The recursive deflation process terminates after finitely many steps, the deflation sequences of all points are equal and regular, and for every point with deflation sequence ,
The conjecture extends the known regularity of deflation for isolated singular solutions to positive-dimensional ultrasingular components. Its first assertion predicts finite termination and recovery of the component dimension at generic smooth points; its second gives a lower bound for the local dimension at the remaining points. The supplied text gives no resolution, so the status is open.
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Sources & referencesView supporting material
Primary source
Xin Li, Liping Zhang and Yifen Ke, “Deflation conjecture and local dimensions of Brent equations”, arXiv:2310.11686 (2024).
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