Abstract:
Let X(s, t)=e^-\alpha s-\beta t\leftX_0+\sigma \int_0^s \int_0^t e^\alpha a+\beta b d w(a, b)\right be an Ornstein-Uhlenbeck Process with two parameters (oup
2). Let
l:
t=
λs+
T(
s≥0) be a ray, and
λ and
c two nonnegative constants.
Y=
X(
s,
λs+
c),
s≥0, is the process induced by
X(
s,
t) on the ray
l.
Y is a Marker Process and its transition density is calculated. It is proved that
Y is oup
1 if and only if
λ=0,
c>0, and
Y is a weakly stationary Process if and only if \lambda=0, \quad c=\frac\ln \left(\sigma^2+4 \alpha \beta E X_0^2\right)-2 \ln \sigma2 \beta.