On the Almost Sure Convergence of Weighted Sums

가중합에 대한 거의 확실한 수렴성 연구

  • Sung, Soo-Hak (Department of Applied Mathematics, Pai Chai University) ;
  • Kim, Sung-Soo (Department of Applied Mathematics, Pai Chai University) ;
  • Lee, Gyou-Bong (Department of Applied Mathematics, Pai Chai University)
  • Published : 1996.02.28

Abstract

Let {X,$X_n$,n$\geq$1} be i.i.d. random variables with mean zero and {$a_ni$, 1$\leq$i$\leq$n,n$\geq$1} a triangular array of constants. In this paper we give sufficient conditions on X and {$a_ni$} such that $sum_{i=1}^n$$a_{ni}$$X_i$ converges to zero almostly surely.

{X,$X_n$,n$\geq$1}은 독립이고 평균이 영으로 같은 확률분포를 갖는 확률변수 열이고, {$a_ni$, 1$\leq$i$\leq$n,n$\geq$1}은 수열일 때 가중합 $sum_{i=1}^n$$a_{ni}$$X_i$가 0에 확률 1로 수렴할 충분조건을 제시한다.

Keywords