The bidisk conclusion for domains without totally real boundary points
The bidisk conclusion for domains without totally real boundary points
Let be a hyperbolic complex surface, and let be a subdomain with boundary. A compact quotient of means that admits a quotient by a group of biholomorphisms that is compact. A boundary point is totally real in the sense used for the boundary of . Bidisk conjecture. If admits a compact quotient and does not contain a totally real boundary point, then the universal cover of is biholomorphic to a bidisk. This is presented as a potential extension of the result of Cheung et al. that, under a smooth-boundary hypothesis, the universal cover is either a ball or a bidisk. The source replaces smoothness by the weaker condition; the resolution status of this asserted consequence is not specified in the supplied text.
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Primary source
Nicholas Newsome, “Bounded domains on Kobayashi hyperbolic manifolds covering compact complex manifolds”, arXiv:2504.03935 (2026).
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