Theodor Schönemann

Theodor Schönemann, also written Schoenemann, was a German mathematician who obtained several important results in number theory concerning the theory of congruences, which can be found in several publications in Crelle's journal, volumes 17 to 40. Notably he obtained Hensel's lemma before Hensel, Scholz's reciprocity law before Scholz, and formulated Eisenstein's criterion before Eisenstein. He also studied, under the form of integer polynomials modulo both a prime number and an irreducible polynomial, what can nowadays be recognized as finite fields.