Professor Steiner was known for his work in the philosophy of mathematics, Wittgenstein, and philosophy of science, authoring The Applicability of Mathematics as a Philosophical Problem and Mathematical Knowledge, and many articles. You can browse some of his research here.
Professor Steiner worked at Hebrew University of Jerusalem since 1977. Prior to that, he was a assistant professor of philosophy at Columbia University. He earned his Ph.D. from Princeton University in 1972.