Correlation between the first and a random bit of an ergodic binary sequence












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Let $x=(x_1,x_2, ldots) $ be an ergodic random sequence of bits. Let $k $ be a positive integer, and $j $ a random integer uniformly distributed in ${1,ldots, k} $. Is it alway the case that $Cov (x_1,x_i) geq 0$?



Specifically, does the above hold when $x $ is a random rotation of a fixed periodic binary sequence?










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  • $begingroup$
    I've posted the same question on MathOverflow.
    $endgroup$
    – Ron
    Jan 25 at 22:13
















0












$begingroup$


Let $x=(x_1,x_2, ldots) $ be an ergodic random sequence of bits. Let $k $ be a positive integer, and $j $ a random integer uniformly distributed in ${1,ldots, k} $. Is it alway the case that $Cov (x_1,x_i) geq 0$?



Specifically, does the above hold when $x $ is a random rotation of a fixed periodic binary sequence?










share|cite|improve this question











$endgroup$












  • $begingroup$
    I've posted the same question on MathOverflow.
    $endgroup$
    – Ron
    Jan 25 at 22:13














0












0








0





$begingroup$


Let $x=(x_1,x_2, ldots) $ be an ergodic random sequence of bits. Let $k $ be a positive integer, and $j $ a random integer uniformly distributed in ${1,ldots, k} $. Is it alway the case that $Cov (x_1,x_i) geq 0$?



Specifically, does the above hold when $x $ is a random rotation of a fixed periodic binary sequence?










share|cite|improve this question











$endgroup$




Let $x=(x_1,x_2, ldots) $ be an ergodic random sequence of bits. Let $k $ be a positive integer, and $j $ a random integer uniformly distributed in ${1,ldots, k} $. Is it alway the case that $Cov (x_1,x_i) geq 0$?



Specifically, does the above hold when $x $ is a random rotation of a fixed periodic binary sequence?







probability






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 25 at 18:54







Ron

















asked Jan 25 at 18:23









RonRon

25116




25116












  • $begingroup$
    I've posted the same question on MathOverflow.
    $endgroup$
    – Ron
    Jan 25 at 22:13


















  • $begingroup$
    I've posted the same question on MathOverflow.
    $endgroup$
    – Ron
    Jan 25 at 22:13
















$begingroup$
I've posted the same question on MathOverflow.
$endgroup$
– Ron
Jan 25 at 22:13




$begingroup$
I've posted the same question on MathOverflow.
$endgroup$
– Ron
Jan 25 at 22:13










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