On Two { Block { Factor Sequencesand One
نویسنده
چکیده
The distributions of two{block{factors (f(i ; i+1); i 1) arising from i.i.d. sequences (i ; i 1) are observed to coincide with the distributions of the superdiagonals (i;i+1 ; i 1) of jointly ex-changeable and dissociated arrays (i;j ; i; j 1). An inequality for superdiagonal probabilities of the arrays is presented. It provides, together with the observation, a simple proof of the fact that a special one{dependent Markov sequence of Aaronson, Gilat and Keane 1] is not a two{block factor. 2
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