Gromov's approximation and interpolation conjectures for elliptic manifolds

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Let YY be a connected complex manifold satisfying Condition Ell1\mathrm{Ell}_1. Let XX be a complex manifold, let Ω⊂X\Omega\subset X be a Runge domain, and let f0∈O(X,Y)f_0\in\mathcal{O}(X,Y) and f1∈O(Ω,Y)f_1\in\mathcal{O}(\Omega,Y) be holomorphic maps. Also let XX be a Stein manifold when considering the interpolation assertion, and let D⊂XD\subset X be a closed discrete subset with a map φ:D→Y\varphi:D\to Y.

Gromov's conjectures. The following assertions hold:

  1. If f1f_1 is homotopic to f0∣Ωf_0|_\Omega through holomorphic maps, then f1f_1 can be approximated on Ω\Omega by holomorphic maps X→YX\to Y.
  2. There exists f1∈O(X,Y)f_1\in\mathcal{O}(X,Y) homotopic to f0f_0 and satisfying f1∣D=φf_1|_D=\varphi.

These are approximation and interpolation forms of the Oka principle for manifolds satisfying Condition Ell1\mathrm{Ell}_1; the source states that they receive affirmative answers from the paper's main theorem, so they are solved rather than open conjectures.

References

Primary source

Yuta Kusakabe, “Elliptic characterization and localization of Oka manifolds”, arXiv:1808.06290 (2018).

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