A counterexample to the complex polynomial Koebe radius conjecture
This paper disproves the 2018 complex-coefficient polynomial Koebe radius conjecture by constructing a specific normalized cubic polynomial that is univalent on a neighborhood of the unit disk yet omits a point with a modulus strictly smaller than the conjectured radius, thereby establishing a strict separation between real and complex cubic Koebe radii and proving that degree three is the minimal degree for such a counterexample.