Kurt Grelling

Kurt Grelling was a German logician and philosopher, member of the Berlin Circle.

Kurt Grelling was born onMarch 1886 in Berlin. His father, the Doctor of Jurisprudence Richard Grelling, and his mother, Margarethe , were Jewish. Shortly after his arrival in 1905 at University of Gttingen, Grelling began a collaboration with philosopher Leonard Nelson, with whom he tried to solve Russells paradox, which had shaken the foundations of mathematics when it was announced in 1903. Their 1908 paper included new paradoxes, including a semantic paradox that was named the GrellingNelson paradox.

Source: Wikipedia