科研之友
微信
新浪微博
Facebook
分享链接
摘要
We consider words over an arbitrary alphabet admitting multiple pseudoperiods according to permutations. We describe the conditions under which such a word exists. Moreover, a natural generalization of Fine and Wilf's Theorem is proved. Finally, we introduce and describe a new family of words sharing properties with the so-called central words. In particular, under some simple conditions, we prove that these words are pseudopalindromes, a result consistent with the fact that central words are palindromes.
- 出版日期2013-11
