Complex and symplectic geometry

Manifolds with complex, almost complex, symplectic or contact structures, Riemann surfaces, and integrable Hamiltonian systems.

TheoremRadó's theorem#●ready to prove

Every connected Riemann surface is second countable: if \(X\) is a connected Hausdorff topological space with an atlas of charts to \(\mathbb{C}\) whose transition maps are of class \(C^1\) over \(\mathbb{C}\) (that is, holomorphic), then the topology of \(X\) is second countable.

public theorem_wanted rado_riemannSurface {X : Type*} [TopologicalSpace X] [T2Space X] [ConnectedSpace X]
    [ChartedSpace ℂ X] [IsManifold (modelWithCornersSelf ℂ ℂ) 1 X] :
    SecondCountableTopology X
Sources
  • John Hamal Hubbard, Teichmüller theory and applications to geometry, topology, and dynamics. Vol. 1, §1.3. Problem rado_riemannSurface of the lean-eval benchmark.

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