Richard Dedekind

Richard Dedekind was born in Germany on 6 October 1831 and spent his career reshaping the foundations beneath arithmetic and algebra. His contributions to number theory and ring theory were substantial, but the work that carved his name into the canon was the Dedekind cut: a way of defining real numbers by partitioning the rationals, bypassing the vague appeal to geometry that had lingered for centuries. He was also an early architect of modern set theory and a figure in logicism, the philosophy that sought to ground mathematics in pure logic. He died on 12 February 1916, leaving a body of wor…