https://en.wikipedia.org/wiki/Otto_Hesse
Ludwig Otto Hesse (22 April 1811 – 4 August 1874) was a German mathematician.Hesse was born in Königsberg, Prussia, and died in Munich, Bavaria.He worked mainly on algebraic invariants, and geometry.The Hessian matrix, the Hesse normal form, the Hesse configuration, the Hessian group, Hessian pairs, Hesse's theorem, Hesse pencil, and the Hesse transfer principle are …