D:\sbornik\...\Article.DVI Mathematical Problems of Computer Science 37, 35{38, 2012. On M aximal Dead-end Recognizing Systems in the Class of T wo-E lement Subsets Concer ning Oper ations of I nter section and Complement S e yr a n M. V a r d a n ya n Institute for Informatics and Automation Problems of NAS of RA e-mail: seyranv@ipia.sci.am Abstract The structure of dead-end n{recognizing systems having a maximal possible length in the class of two-element subsets concerning the operations of intersection and com- plement is investigated. The quantity of such systems is estimated. Refer ences [1 ] Ï. Ýðäåø, Äæ. Ñïåíñåð, Âåðîÿòíîñòíûå ìåòîäû â êîìáèíàòîðèêå. Ìîñêâà, ”Ìèð”, 1976. [2 ] Ñ. Ì. Âàðäàíÿí, “Îá îäíîé çàäà÷å ðàñïîçíàâàíèÿ ìíîæåñòâ”, ÄÀÍ Àðì. ÑÑÐ, òîì 72, ññ. 141- 143, 1981. [3 ] Ñ. Ì. Âàðäàíÿí, “Î äëèíàõ òóïèêîâûõ ðàñïîçíàþùèõ ñèñòåì â êëàññå äâóõýëåìåíòíûõ ïîäìíîæåñòâ”, ÄÍÀÍ ÐÀ, òîì 107, N 1, ññ. 37 - 43, 2007. [4 ] S . M. V a r d a n ya n , \ R e c o g n iz ig s e t s ( s ys t e m s ) " P roceedings of International Confer- ence Computer Science and Information Technologies CSIT05, p p .1 6 1 - 1 6 2 , Y e r e va n , A r m e n ia 2 0 0 5 . [5 ] S . M. V a r d a n ya n , \ On t h e p o we r s o f d e a d -e n d r e c o g n iz in g s ys t e m s in t h e c la s s o f t wo - e le m e n t s e t s c o n c e r n in g o p e r a t io n s o f in t e r s e c t io n a n d c o m p le m e n t " , M athematical P roblems of Computer Sciences, vo l. 3 5 , p p . 1 0 4 { 1 0 8 , 2 0 1 1 . [6 ] Ñ. Ì. Âàðäàíÿí, “Î ìèíèìàëüíîñòè íåêîòîðûõ ðàñïîçíàþùèõ ñèñòåì â êëàññå äâóõýëåìåíòíûõ ïîäìíîæåñòâ îòíîñèòåëüíî îïåðàöèé ïåðåñå÷åíèÿ è äîïîëíåíèÿ”, ÄÍÀÍ ÐÀ, òîì 112, N 1, ññ. 57 - 66, 2012. [7 ] F. H a r a r y, Graph Theory, A d d is o n - W e s le y. R e a d in g MA 1 9 6 9 . 3 5 3 6 On Maximal Dead-end Recognizing Systems in the Class of Two-Element Subsets гïÙ³Ý ¨ Éñ³óÙ³Ý ·áñÍáÕáõÃÛáõÝÝ»ñÇ Ýϳïٳٵ »ñÏï³ññ »Ýóµ³½ÙáõÃÛáõÝÝ»ñÇ ¹³ëáõÙ ³é³í»É³·áõÛÝ »ñϳñáõÃÛáõÝ áõÝ»óáÕ ×³Ý³ãáÕ ÷³ÏáõÕ³ÛÇÝ Ñ³Ù³Ï³ñ·»ñÇ Ù³ëÇÝ ê. ì³ñ¹³ÝÛ³Ý ²Ù÷á÷áõÙ ²é³í»É³·áõÛÝ Ñݳñ³íáñ »ñϳñáõÃÛáõÝ áõÝ»óáÕ n-׳ݳãáÕ ÷³ÏáõÕ³ÛÇÝ Ñ³Ù³Ï³ñ·»ñÇ Ï³éáõóí³ÍùÁ ѻﳽáïíáõÙ ¿ »ñÏï³ññ »Ýóµ³½ÙáõÃÛáõÝÝ»ñÇ ¹³ëáõÙ Éñ³óÙ³Ý ¨ ѳïÙ³Ý ·áñÍáÕáõÃÛáõÝÝ»ñÇ Ýϳïٳٵ: ¶Ý³Ñ³ïíáõÙ ¿ ÝÙ³Ý ïÇåÇ Ñ³Ù³Ï³ñ·»ñÇ ù³Ý³ÏÁ: Î ðàñïîçíàþùèõ òóïèêîâûõ ñèñòåìàõ, èìåþùèõ íàèáîëüøóþ âîçìîæíóþ äëèíó â êëàññå äâóõýëåìåíòíûõ ïîäìíîæåñòâ îòíîñèòåëüíî îïåðàöèé ïåðåñå÷åíèÿ è äîïîëíåíèÿ Ñ. Âàðäàíÿí Àííîòàöèÿ Èññëåäóåòñÿ ñòðóêòóðà n-ðàñïîçíàþùèõ òóïèêîâûõ ñèñòåì, èìåþùèõ íàèáîëüøóþ âîçìîæíóþ äëèíó â êëàññå äâóõýëåìåíòíûõ ïîäìíîæåñòâ îòíîñèòåëüíî îïåðàöèé ïåðåñå÷åíèÿ è äîïîëíåíèÿ. Îïèñûâàþòñÿ âñåâîçìîæíûå òèïû n-ðàñïîçíàþùèõ ìàêñèìàëüíûõ òóïèêîâûõ ñèñòåì è äàåòñÿ îöåíêà êîëè÷åñòâà òàêèõ ñèñòåì.