abstract:In mathematics, the Poincaré conjecture ( ; ). is a theorem about the characterization of the 3-sphere, which is the hypersphere that bounds the unit ball in four-dimensional space.
The Poincaré Conjecturewasfirstposedby the Frenchmathematician, Jules HenriPoincaré, in 1904, and seeks to understand the shapeof the universe by linking shapes, spaces and surfaces.