摘要
本文讨论了C~∞-字的一些性质,并对C~∞-字的幂证明了以下的结果:对任意C~∞-字w,存在一个正整数k=k(w),使w~k是C~∞-字,w^(k+1)不是C~∞-字.
In this short paper,we study the properties of C ̄∞- words and prove the following interesting result on the powers of C ̄∞- words:For every C ̄∞- word w there exists a natural number k=k(w), such that w ̄k is a C ̄∞- word but w ̄(k+1) is not a C ̄∞- word.
出处
《高校应用数学学报(A辑)》
CSCD
北大核心
1994年第4期449-452,共4页
Applied Mathematics A Journal of Chinese Universities(Ser.A)