کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4625287 | 1340336 | 2008 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hankel determinants for some common lattice paths
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hankel determinants for some common lattice paths Hankel determinants for some common lattice paths](/preview/png/4625287.png)
چکیده انگلیسی
For a fixed positive integer â, let f(n,â) denote the number of lattice paths that use the steps (1,1), (1,â1), and (â,0), that run from (0,0) to (n,0), and that never run below the horizontal axis. Equivalently, f(n,â) satisfies the quadratic functional equation F(x)=ân⩾0f(n,â)xn=1+xâF(x)+x2F(x)2. Let Hn denote the n by n Hankel matrix, defined so that (Hn)i,j=f(i+jâ2,â). Here we investigate the values of their determinants where â=1,2,3. For â=1,2 we are able to employ the Gessel-Viennot-Lindström method. For the case â=3, the sequence of determinants forms a sequence of period 14, namely,(det(Hn))n⩾1=(1,1,0,0,â1,â1,â1,â1,â1,0,0,1,1,1,1,1,0,0,â1,â1,â1,â¦). For this case we are able to use the continued fractions method recently introduced by Gessel and Xin. We also apply this technique to evaluate Hankel determinants for other generating functions satisfying a certain type of quadratic functional equation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Applied Mathematics - Volume 40, Issue 2, February 2008, Pages 149-167
Journal: Advances in Applied Mathematics - Volume 40, Issue 2, February 2008, Pages 149-167
نویسندگان
Robert A. Sulanke, Guoce Xin,