Logic for programming, artificial intelligence, and reasoning

ThisvolumecontainsthepaperspresentedattheNinthInternationalC- ferenceonLogicforProgramming,Arti?cialIntelligence,andReasoning(LPAR 2002),heldonOctober14–18,2002,attheUniversityofTbilisi(Georgia),- getherwiththeThirdInternationalWorkshoponImplementationofLogics. Therewere68submissions,ofwhicheightbelongedtothespecialsubmission categoryofexperimentalpapers,intendedtodescribeimplementationsorc- parisonsofsystems,orexperimentswithsystems. Eachsubmissionwasreviewed byatleastthreeprogramcommitteemembersandanelectronicprogramc- mitteemeetingwasheldviatheInternet. Thenumberofsubmissionsandshort reviewingperiodcausedalargeamountofwork,andweareverygratefultothe other22PCmembersfortheire?ciencyandforthequalityoftheirreviewsand discussions. Finally,thecommitteedecidedtoaccept30papers. Theprogramme alsoincludesthreeinvitedlecturesandapostersession.^ Apartfromtheprogrammecomittee,wewouldalsoliketothanktheother people who made LPAR 2002 possible: the additional referees, and the local arrangementschairsKhimuriRhukia,KotePhakadze,GelaChankvetadze,and JemalAntidze. TheInternet-basedsubmissionsoftwareandtheprogramcommitteedisc- sionsoftwarewereprovidedbythesecondco-chair.^ August2002 MatthiasBaaz An