Knowledge Exchange: Automated Provers and Proof Assistants (KEAPPA) Existing automated provers and proof assistants are complementary, to the point that their cooperative integration would benefit all efforts in automating reasoning. Indeed, a number of specialized tools incorporating such integration have been built. The issue is, however, wider, as we can envisage cooper- ation among various automated provers as well as among various proof assistants. This workshop brings together practitioners and researchers who have experimented with knowledge exchange among tools supporting automated reasoning. Organizers: Piotr Rudnicki, Geoff Sutcliffe The 7th International Workshop on the Implementation of Logics (IWIL) IWIL has been unusually sucessful in bringing together many talented developers, and thus in sharing information about successful implementation techniques for automated reasoning systems and similar programs. The workshop includes contributions describing implementation techniques for and imple- mentations of automated reasoning programs, theorem provers for various logics, logic programming systems, and related technologies. Organizers: Boris Konev, Renate Schmidt, Stephan Schulz