Takeo Wada
Encyclopedia
Takeo Wada (1882–1944) was a Japanese mathematician working in topology
Topology
Topology is a major area of mathematics concerned with properties that are preserved under continuous deformations of objects, such as deformations that involve stretching, but no tearing or gluing...

, who suggested the Lakes of Wada
Lakes of Wada
In mathematics, the lakes of Wada are three disjoint connected open sets of the plane with the counterintuitive property that they all have the same boundary....

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