走进一个绝对和
Walking into an absolute sum
摘要:
我们调查的组合和,可以解释为一个随机变量的时刻,测量的绝对距离的原点在一个对称的伯努利随机游动。这些和可以由与Dumont-Foata多项式相关的多项式来表征。对应于奇时刻的和与甘地多项式和Genocchi数有关。
英文摘要:
We investigate a combinatorial sum that can be interpreted as the moments of a random variate, measuring the absolute distance to the origin in a symmetric Bernoulli random walk. These sums can be characterized by polynomials related to the Dumont-Foata polynomials. The sums corresponding to the odd moments have a connection to the Gandhi polynomials and Genocchi numbers.
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