An asymptotic property of a gap sequence

An asymptotic property of a gap sequence
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间隙序列的渐近性质

DOI:
10.3792/pja/1195523464
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发表时间:
1962
影响因子:
0.5
通讯作者:
Shigeru Takahashi
Shigeru Takahashi
中科院分区:
数学4区
文献类型:
--
作者:
Shigeru Takahashi

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且[n]是一个正整数数列,即(1.2)n+1/n> q1.然后函数序列{f(nt)},虽然它们本身不是独立的,但表现出独立随机变量的性质(c.f. 3)。在2教授S。Izumi证明了如果f(t)满足一定的光滑性条件,则{f(2 t)}服从重对数律,如果f(t)-cos 2 zt + cos 4 zt且n-2- 1,则根据ErdSs和Gl 1的定理,有1 lim,f(nt)= 2coszt,a.e.于t.这表明即使f(t)是三角多项式,{f(nt)}也不一定遵守重对数定律。在2-4中,我们将证明以下定理。设f(t)和{n}分别满足(1.1)和(1.2),f(t)是Lip的函数,0 _(?)
and [n] be a laeunary sequence of positive integers, that is, (1.2) n+l/n>q 1. Then the sequence of functions {f(nt)}, although themselves not independent, exibits the properties of independent random variables (c.f. 3). In 2 Professor S. Izumi proved that if f(t) satisfies certain smoothness conditions, then {f(2t)} obeys the law of the iterated logarithm, tIowever if we put f(t)-cos2zt+cos4zt and n-2--1, then, by the theorem of ErdSs and Gl 1, we have, 1 lim ,f(nt) =2 cos zt, a.e. in t. -/Nlog logN=l This shows that {f(nt)} does not necessarily obey the law of the iterated logarithm even if f(t) is a trigonometric polynomal. In 2-4 we shall prove the following Theorem. Let f(t) and {n} satisfy (1.1) and (1.2) respectively and f(t) be a function of Lip , 0 _