1. Conditional Excluded Middle in Systems of Consequential Implication

   • C. Pizzi
   • T. Williamson

   OriginalPaper Pages: 333 - 362

2. Toward a More Natural Expression of Quantum Logic with Boolean Fractions

   • Philip G. Calabrese

   OriginalPaper Pages: 363 - 401

3. On the Axiomatisation of Elgesem's Logic of Agency and Ability

   • Guido Governatori
   • Antonino Rotolo

   OriginalPaper Pages: 403 - 431

4. On the Matter of Essential Richness

   • Greg Ray

   OriginalPaper Pages: 433 - 457