Avigad, Jeremy Carnegie Mellon University - Proof theory, constructive mathematics, proof complexity, the history and philosophy of mathematics. http://www.andrew.cmu.edu/user/avigad/ Cmu.edu~Site InfoWhoisTrace RouteRBL Check
Sieg, Wilfried Carnegie Mellon University - Proof theory, philosophy of mathematics, history of 19th and 20th century logic and mathematics. http://www.hss.cmu.edu/philosophy/faculty-sieg.php Cmu.edu~Site InfoWhoisTrace RouteRBL Check
Luo, Zhaohui University of London, UK - Type theory, theoretical computer science and semantics of natural languages. http://www.cs.rhul.ac.uk/~zhaohui/ Rhul.ac.uk~Site InfoWhoisTrace RouteRBL Check
Vickers, Steven University of Birmingham, UK - Geometric logic, topos theory, quantales and semantics of programming languages. http://www.cs.bham.ac.uk/~sjv/ Bham.ac.uk~Site InfoWhoisTrace RouteRBL Check