Question: Ludwig Wittgenstein and Otto Weininger both studied in what field?
Sentence (from "Ludwig Wittgenstein's philosophy of mathematics"): As with his philosophy of language, Wittgenstein's views on mathematics evolved from the period of the Tractatus Logico-Philosophicus, changing from logicism which was endorsed by his mentor Bertrand Russell, to a general anti-foundationalism and constructivism that was not readily accepted by the mathematical community.
Relevant evidence: No