نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسنده English
Using cyclic permutations, Narayana investigated the relation between the area under north-east paths from the origin to the point (n,n) and the number of the flaws of the paths. His result implies a proof to the Chung-Feller Theorem. In this paper by revising the Narayana's approach, we offer short proofs to the theorems of Narayana and Chung-Feller.
کلیدواژهها English