Mathematics – Statistics Theory
Scientific paper
2006-11-11
Stochastic Processes and their Applications 118, 5 (2008) 755-761
Mathematics
Statistics Theory
Scientific paper
10.1016/j.spa.2007.06.002
A new sufficient condition for the existence of a stationary causal solution
of an ARCH($\infty$) equation is provided. This condition allows to consider
polynomially decaying coefficients, so that it can be applied to the so-called
FIGARCH processes, whose existence is thus proved.
Douc Randal
Roueff François
Soulier Philippe
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