A New Perspective on Nonmonotonic Logics [electronic resource] by Dov M. Gabbay, Karl Schlechta.

"Logics are like shadows on a wall; to understand why they dance as they do, and how they can be made to move differently, one needs to look at the mathematical structures from which they can be projected. That is a methodology that has long proven its value for classical and other forms of deductiv...

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