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arXiv 1801.08698math.PRmath-phmath.FAmath.MPmath.STphysics.data-anstat.TH
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无测度泛函和浓度的平均值

Average values of functionals and concentration without measure

Cheng-shi Liu

摘要:

虽然在具有$p-$范数的$C[0,1]$的球$M$中不存在Lebesgue测度,但通过从有限维到无限维的限制过程,仍然可以定义$M$上某些泛函$Y$的平均值(期望)$EY$和方差$DY$.特别地,球$M$中的点的坐标的概率密度存在,并且即使$M$中的点的密度不存在,也导出该概率密度。这些密度包括高阶正态分布、高阶指数分布。这也可以被认为是这些概率分布的几何起源。进一步得到了一类无穷维泛函积分的精确值(用有限维积分表示),特别证明了方差$DY$为零,并给出了泛函平均值的非线性交换公式.而不是测量,方差用于测量函数与其平均值的偏差。$DY=0$是指一个泛函用概率论的语言对概率为1的球取平均值,这就是无测度的浓度。此外,我们证明了平均值取决于离散化。

英文摘要:

Although there doesn't exist the Lebesgue measure in the ball $M$ of $C[0,1]$ with $p-$norm, the average values (expectation) $EY$ and variance $DY$ of some functionals $Y$ on $M$ can still be defined through the procedure of limitation from finite dimension to infinite dimension. In particular, the probability densities of coordinates of points in the ball $M$ exist and are derived out even though the density of points in $M$ doesn't exist. These densities include high order normal distribution, high order exponent distribution. This also can be considered as the geometrical origins of these probability distributions. Further, the exact values (which is represented in terms of finite dimensional integral) of a kind of infinite-dimensional functional integrals are obtained, and specially the variance $DY$ is proven to be zero, and then the nonlinear exchange formulas of average values of functionals are also given. Instead of measure, the variance is used to measure the deviation of functional from its average value. $DY=0$ means that a functional takes its average on a ball with probability 1 by using the language of probability theory, and this is just the concentration without measure. In addition, we prove that the average value depends on the discretization.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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