Hannes Leitgeb

Hannes Leitgeb (born 26 June 1972) is an Austrian philosopher and mathematician from Salzburg. He is currently a Professor of Philosophy at LMU Munich and was awarded a Humboldt Professorship in 2010. Leitgeb's research interests are extensive, covering logic (including theories of truth, modality, paradox, conditionals, nonmonotonic reasoning, and doxastic logic), epistemology (belief, inference, belief revision, probability foundations, and Bayesianism), philosophy of mathematics (structuralism, informal provability, abstraction, and criteria of identity), philosophy of language (indeterminacy of translation and compositionality), cognitive science (symbolic representation, neural networks, and metacognition), philosophy of science (empirical content and measurement theory), and the history of philosophy (logical positivism, Carnap, and Quine). Leitgeb pursued his academic career by studying mathematics at the University of Salzburg, where he obtained a master's degree in 1997. He went on to complete PhDs in both mathematics (1998) and philosophy (2001) at the same institution. Following his doctoral studies, he took on a role as an assistant professor at the University of Salzburg's faculty of philosophy. In 2003, he was granted an Erwin Schrödinger Scholarship by the Austrian Science Fund, enabling him to conduct research at Stanford University's Department of Philosophy/CSLI. From 2005 onwards, Leitgeb was affiliated with the Departments of Philosophy and Mathematics at the University of Bristol, eventually becoming a Professor of Mathematical Logic and Philosophy of Mathematics two years later. In the autumn of 2010, he accepted an invitation to the Chair of Logic and Philosophy of Language at LMU Munich, where he also assumed the directorship of the Munich Center for Mathematical Philosophy. Leitgeb was elected a member of the German Academy of Sciences Leopoldina in 2016 and received the Gottfried Wilhelm Leibniz Prize in 2025.