Common Syntax of the DFG-Schwerpunktprogramm ''Deduktion''

A common exchange format for logic problems to be used by members of the DFG-Schwerpunkt-programm \Deduktion" is introduced. It is thought to be an internal format that can easily be parsed such that it forms a compromise between the needs of the diierent groups. It is not intended to be a high-level general logic language that is easy to read or to write. The language is more general than other popular exchange formats such as Otter or TPTP in allowing non-clausal and sorted formulas as well as user-deened operators and quantiiers. The latter feature makes it also useful for non-classical logics.