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Fibonacci, Leonardo (ar 1175- send 1240)

fibonacci.jpgD amussnak (mathématicien) aṭelyani. Fibonacci ilul di temdint n Pise tamdint n tnezzut (commerce). Mi yewweḍ 20 iseggwasen di ticett-is iḍfer baba-s γer tferka ugafa (ar Bgayet) din I iγra anagraw n usmiden ihendiyen d usmiden inselmanen. Mi d-yuγal γer Turuft (Europe), deg useggwas 1202, issuffeγ-d adlis Liber abbci, deg-s I d-immal asmiden anselman d wulac (0).

Fibonacci yura γef tiẓri n yemḍanen d tnezzeggit (géométrie), ittwassen daγen s umazrar (suite) n « tlalit n iwtal » :

u1=0 ; u2=0 un=un-1+un-2 n>2 (0, 1, 1, 2, 3, 5, 8, 13, ...).

Amazrar-agi isnulfa t-id assmi is d-sutren kra n imγiden γef tnerni n iwtal-nsen. Ran ad walin acḥal n iwtal ar a d-yeǧ myal awtul illan γur-sen. Dγa netta, imi I issen I tussnak tikli issal-id amazrar iṭfen ism-is ar ass-a : amazrar n Fibonacci.

Sγur Mack A.A d Yusef A.Y

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