کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
419600 | 683842 | 2013 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Permuting operations on strings and the distribution of their prime numbers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Several ways of interleaving, as studied in theoretical computer science, and some subjects from mathematics can be modeled by length-preserving operations on strings, that only permute the symbol positions in strings. Each such operation XX gives rise to a family {Xn}n≥2{Xn}n≥2 of similar permutations. We call an integer nX-prime if XnXn consists of a single cycle of length nn (n≥2n≥2). For some instances of XX–such as shuffle, twist, operations based on the Archimedes’ spiral and on the Josephus problem–we investigate the distribution of XX-primes and of the associated (ordinary) prime numbers, which leads to variations of some well-known conjectures on the density of certain sets of prime numbers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Discrete Applied Mathematics - Volume 161, Issues 13–14, September 2013, Pages 1868–1881
Journal: Discrete Applied Mathematics - Volume 161, Issues 13–14, September 2013, Pages 1868–1881
نویسندگان
Peter R.J. Asveld,