Lipschitz regularity at infinity and affine linearity conjecture

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Let X⊂CnX\subset\mathbb{C}^n be a pure dd-dimensional entire complex analytic subset. Suppose that there exists a sequence T={tj}j∈NT=\{t_j\}_{j\in\mathbb{N}} of real positive numbers such that tj→+∞t_j\to +\infty and E=C∞T(X)E=C_{\infty}^T(X) is a dd-dimensional complex linear subspace of Cn\mathbb{C}^n. Here, C∞T(X)C_{\infty}^T(X) denotes the tangent cone at infinity of XX with respect to TT, and XX is LNE at infinity when its inner and outer distances are uniformly comparable outside a compact set. The affine-linearity conjecture. If XX is LNE at infinity, then XX is an affine linear subspace of Cn\mathbb{C}^n. This extends the preceding result for Lipschitz regularity at infinity, which gives affine linearity under stronger assumptions; the conjecture concerns the corresponding conclusion under LNE at infinity.

References

Primary source

José Edson Sampaio, “On Lipschitz Geometry at infinity of complex analytic sets”, arXiv:2207.07692 (2022).

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