lya

Multidimensional Pascal Distribution and Multidimensional P ó lya Distribution

多维Pascal分布与多维Pólya分布

High-resolution spectra contains more information , so it is necessary to study Lya forest with high-resolution spectra .

高分辨率光谱（≤30km/sec）可以提供更多的信息。因此，有必要利用高分辨率光谱来对Lyα森林进行研究。

In this paper , a counting formulae of binary orthogonal arrays of strength 1 is given using P ó lya enumerative theory .

利用Pólya计数理论给出强度1二元正交阵列计数公式。

The chromatic orbit polynomials of graphs presented in this paper are integration and generalization of P ó lya ′ s Formula and the chromatic polynomials of graphs .

色轨道多项式是色多项式与Pólya计数公式的推广。

Unimodality problem is one of the primary topics in combinatorics , including the study of unimodality , log-concavity , log-convexity and P (?) lya frequency property .

单峰型问题是组合学中基本的研究课题之一，其内容包括单峰性、对数凹性、对数凸性和PF性质的研究等。

In this paper , we not only extract some linear feature parameters but also four nonlinear feature parameters , they are DIM , LYA , PBX , TU , It made the predict result more credibility .

本文在对储层流体的地震特征参数提取时，不仅提取了一些线性特征参数，还提取了4个非线性特征参数，使得油气预测更加准确可靠；