Linked from

The 4 pages that link to Koebe quarter theorem, each with the reason it gives.

• Riemann mapping theoremRelated: Its distortion estimates are among the tools developed from the mapping theorem's methods.

• Schwarz–Christoffel mappingRelated: It concerns general univalent maps rather than explicit polygonal boundary correspondence.

• De Branges's theoremRelated: Koebe's foundational result belongs to the theory from which the coefficient problem arose.