ISSN:
1432-2064
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
Summary We prove an invariance principle for the random process (X n ) n≧1 given by $$\left\{ \begin{gathered} X_1 = x \in \mathbb{R} \hfill \\ X_{n + 1} = \max (X_{n,} \alpha _n X_n + Y_n ),{\text{ }}n \geqq 1 \hfill \\ \end{gathered} \right.$$ where (Y n ) n≧1 are i.i.d. random variables and (α n ) n≧ are nonrandom numbers tending upward to 1 (both in ℝ). This process interpolates between maxima (α n ≡0) and sums (α n ≡1). Depending on the distribution ofY n and on the rate at which α n →1 the scaling behaviour exhibits different regimes. Our techniques are flexible and are applicable to more general types of iterative schemes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01321133