Joseph Melia
Joseph Melia is a philosopher working in the areas of philosophy of mathematics, modal logic and possible worlds. He has made important contributions to the debate over the Quine–Putnam indispensability argument, where he argues for a "weaseling" approach to mathematical nominalism. He has also argued against modalism and the modal realism of David Lewis. References 

Philosophers of mathematics
20th-century British philosophers
Year of birth missing (living people)
Living people
21st-century British philosophers