Gromov's approximation and interpolation conjectures for elliptic manifolds

Let YY be a connected complex manifold satisfying Condition Ell1\mathrm{Ell}_1. Let XX be a complex manifold, let ΩX\Omega\subset X be a Runge domain, and let f0O(X,Y)f_0\in\mathcal{O}(X,Y) and f1O(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 DXD\subset X be a closed discrete subset with a map φ:DY\varphi:D\to Y.

Gromov's conjectures. The following assertions hold:

  1. If f1f_1 is homotopic to f0Ωf_0|_\Omega through holomorphic maps, then f1f_1 can be approximated on Ω\Omega by holomorphic maps XYX\to Y.
  2. There exists f1O(X,Y)f_1\in\mathcal{O}(X,Y) homotopic to f0f_0 and satisfying f1D=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.

Sources & referencesView supporting material

Primary source

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

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