@TechReport{wernhard:14:2003, author = "Christoph Wernhard", title = "{System Description: KRHyper}", institution = "{Universität Koblenz-Landau}", year = "{2003}", type = "Fachberichte Informatik", number = "14--2003", language = "english", address = "Universität Koblenz-Landau, Institut für Informatik, Universitätsstr. 1, D-56070 Koblenz", url = "http://www.uni-koblenz.de/fb4/publikationen/gelbereihe/RR-14-2003.pdf", abstract = "KRHyper is a first order logic theorem proving and model generation system based on the hyper tableau calculus. It is targeted for use as an embedded system within knowledge based applications. In contrast to most first order theorem provers, it supports features important for those applications, for example queries with predicate extensions as answers, handling of large sets of uniformly structured input facts, arithmetic evaluation and stratified negation as failure. " }