The tail $\sigma$-fields of recurrent Markov processes
Applications of Mathematics, Tome 22 (1977) no. 6, pp. 397-408.
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Let $\left\{X_n,-\infty n + \infty \right\}$ be a Markov process with stationary transition probabilities having a $\sigma$-finite stationary measure and satisfying a weak recurrence condition. We investigate the structure of the forward and backward tail $\sigma$-fields, $\Cal T_{+\infty}$ and $\Cal T_{-\infty}$, under a variety of situations. The main result is a representation theorem for the sets of $\Cal T_{+\infty}$; using this we develop a self-contained comprehensive treatment, deriving new as well as known theorems, including the decomposition into cyclically moving classes of processes satisfying the condition of Harris. The point of view and the techniques are probabilistic throughout.
@article{10_21136_AM_1977_103716, author = {Isaac, Richard}, title = {The tail $\sigma$-fields of recurrent {Markov} processes}, journal = {Applications of Mathematics}, pages = {397--408}, publisher = {mathdoc}, volume = {22}, number = {6}, year = {1977}, doi = {10.21136/AM.1977.103716}, mrnumber = {0474503}, zbl = {0375.60075}, language = {en}, url = {https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1977.103716/} }
TY - JOUR AU - Isaac, Richard TI - The tail $\sigma$-fields of recurrent Markov processes JO - Applications of Mathematics PY - 1977 SP - 397 EP - 408 VL - 22 IS - 6 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1977.103716/ DO - 10.21136/AM.1977.103716 LA - en ID - 10_21136_AM_1977_103716 ER -
Isaac, Richard. The tail $\sigma$-fields of recurrent Markov processes. Applications of Mathematics, Tome 22 (1977) no. 6, pp. 397-408. doi : 10.21136/AM.1977.103716. https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1977.103716/
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