00448nam a2200133Ia 450000500170000000800410001704100080005808200150006610000220008124500250010326000380012830000140016665001340018020191018113632.0190710s9999    xx            000 0 und d  aeng  a517.6 N54D  aNicodemi, Olympia 0aDiscrete mathematics  aDelhib: C.B.S. Publishers,c1989  axiv,491p.  aDiscrete mathematics a|Set theorya|Mathematical - Functionalsa|Mathematical - Relations a|Graph theory a|Algebra a|Digraphs