School of History, Philosophy, Political Science and International Relations

Prof Edwin Mares

School of History, Philosophy, Political Science & International Relations

Phone: 04 463 5234
Location: Room 618, Murphy Building, Kelburn Pde, Kelburn Campus

Prof Edwin Mares


  • BA(Hons) McM
  • PhD Indiana


Ed received his BA (Hons) from McMaster University and his PhD from Indiana University. He held a Social Science and Humanities Research Council of Canada postdoctoral fellowship at the Automated Reasoning Project at The Australian National University and taught at Dalhousie Univesity and University of Victoria before coming to Victoria University.

Ed is the managing editor of the Australasian Journal of Logic and is a founding and current member of Victoria's  Centre for Logic, Language and Computation.

Research Areas

Ed's main research areas are logic and the philosophy of logic. His main interest over the past decade is in developing and finding a philosophically satisfying interpretation of relevant logic. The fruits of his labours in this area can be found in his book, Relevant Logic: A Philosophical Interpretation (Cambridge University Press, 2004). The central idea behind relevant logic is that there needs to be a tighter connection in arguments considered valid than we find in many arguments that are deemed valid by standard (or 'classical') logic. For a brief and relatively non-technical introduction to relevant logic, see Ed's entry on it in the Stanford Encyclopedia of Philosophy

Ed is also working on projects in paraconsistent logic. Paraconsistent logics are logical systems that do not allow the derivation of every formula from every contradiction. These logics are useful in formalising theories of how people do or should reason about fictional stories, scientific theories, and their own beliefs.

From time to time, Ed returns to the engrossing but very difficult field of the philosophy of probability. His recent paper 'Belief Revision, Probabilism, and Logic Choice' combines his interests in logic with his interests in probability. He is also extremely interested in the problem of the interpretation of probability statements as they are found in scientific theories such as quantum mechanics, but he has made little headway on this.

Selected Publications



  • 'Belief Revision, Probabilism, and Logic Choice', forthcoming in Review of Symbolic Logic. Published online by Cambridge Journals Online.
  • (With Francesco Paoli) 'Logical Consequence and the Paradoxes'. Journal of Philosophical Logic 43 (2014) 439-469
  • 'Lewisian Semantics for S2', History and Philosophy of Logic 34 (2013) 53-67
  • 'Relevant Logic and the Philosophy of Mathematics', Philosophy Compass 7 (2012) 481-49
  • (with David Gilbert) 'Two-Dimensional Logics of Actuality', Review of Symbolic Logic 5 (2012) 239-258
  • 'Relevance and Conjunction', Journal of Logic and Computation 22 (2012) 7-21
  • (with JC Beall, Ross Brady, J.M. Dunn, Allen Hazen, Robert Meyer, Graham Priest, Greg Restall, David Ripley, John Slaney, and Richard Sylvan) 'On the Ternary Relation and Conditionality', Journal of Philosophical Logic 41 (2012) 595-612
  • 'The Nature of Information: A Relevant Approach', Synthese 175 supplement 1 (2010) 111-132 (special issue on the nature and scope of information)
  • 'General Information in Relevant Logic', Synthese 167 (2009) 343-362
  • 'A General Semantics for Quantified Modal Logic' (with Rob Goldblatt) Advances in Modal Logic, London: College Publications, 2006
  • 'An Alternative Semantics for Quantified Relevant Logic' (with Rob Goldblatt) The Journal of Symbolic Logic 71 (2006) 163-187
  • '"Four-Valued" Semantics for the Relevant Logic R' Journal of Philosophical Logic 33 (2004) pp 327-341
  • 'A Paraconsistent Theory of Belief Revision' Erkenntnis 56 (2002) pp 229-246
  • 'The Incompleteness of RGL' Studia Logica 65 (2000) pp 315-322
  • 'A Star-Free Semantics for R' Journal of Symbolic Logic 61 (1995) pp 579-590

Book Chapters

  • 'Information, Negation, and Parconsistency' in Tanka, et al. (eds), Paraconsistency: Logic and Applications, (Dordrecht: Springer, 2013), 43-55
  • 'Semantic Dialetheism' in Graham Priest, JC Beall, and Brad Armour-Garb (eds), The Law of Non-Contradiction (Oxford University Press, 2004)
  • (with Andre Fuhrmann) 'Conditionals' in Ross Brady (ed), Relevant Logics and their Rivals, Volume II (Ashgate, 2003)
  • 'Relevance Logic' in Dale Jacquette (ed), Companion to Philosophical Logic (Blackwell, 2002)
  • (with Robert K. Meyer) 'Relevant Logics' in Lou Goble (ed), Guide to Philosophical Logic (Blackwell, 2001)