## The Annals of Mathematical Statistics

- Ann. Math. Statist.
- Volume 39, Number 2 (1968), 394-397.

### A Characterization of Certain Sequences of Noming Constants

#### Abstract

Let $\{Y_j\}^\infty_{j = 1}$ be a sequence of random variables defined on a probability space $(\Omega, F, P)$, which are not necessarily independent, or identically distributed. Let $S_n = Y_1 + \cdots + Y_n$. Assume that there exists sequences of constants $\{A_n\}, \{B_n\}, B_n > 0$ such that the limit distribution of $(S_n - A_n)/B_n$ exists. For a class of limit distributions which includes the stable distributions, we give a characterization of $\{B_n\}$ in terms of the dispersion of the sequence of partial sums $S_n$. Such a characterization will be useful in obtaining stable limit theorems for Markov chains since it allows a description of the norming constants which is not dependent on any particular state of the state space of the Markov chain. In addition, using this characterization and that of Tucker in [6], we obtain a partial strengthening of Paul Levy's Theorem on the Augmentation of the Dispersion.

#### Article information

**Source**

Ann. Math. Statist., Volume 39, Number 2 (1968), 394-397.

**Dates**

First available in Project Euclid: 27 April 2007

**Permanent link to this document**

https://projecteuclid.org/euclid.aoms/1177698403

**Digital Object Identifier**

doi:10.1214/aoms/1177698403

**Mathematical Reviews number (MathSciNet)**

MR222934

**Zentralblatt MATH identifier**

0157.46801

**JSTOR**

links.jstor.org

#### Citation

Kimbleton, Stephen R. A Characterization of Certain Sequences of Noming Constants. Ann. Math. Statist. 39 (1968), no. 2, 394--397. doi:10.1214/aoms/1177698403. https://projecteuclid.org/euclid.aoms/1177698403