poisson approximation 中文意思是什麼
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We compare the approximation of an analytic function f by its taylor polynomial and its poisson partial sum with the same number of terms and illustrate that for functions with limit zero at infinity and for bounded functions the poisson expansion provides a better approximation to the function than the taylor expansion
在第三章中，介紹了rb曲線與poisson曲線的概念以及基本的幾何性質，指出了poisson基函數與有理bernstein基函數之間存在的關系，並且將解析函數的taylor逼近與poisson逼近進行比較。實例表明，對于在無窮遠處極限為0的函數以及有界函數， poisson逼近比taylor逼近效果要好。 -
By calculating the feynman diagram in rtf, we find that when taking into account both the thermal photon emission, absorption and the virtual photon exchange processes, the infrared divergences at zero and finite temperature can be cancelled at the same time. the full quantum calculation results for soft photon radiation coincide completely with the poisson distribution obtained in the semiclassical approximation ( the coupling of the classical current and quantized field )
通過實時溫度場論下的費曼圖計算，我們得到：將實光子的發射、吸收，虛光子的交換過程同時考慮時，零溫場論中出現的和由溫度效應引起的紅外發散都能得到消除；並且完全量子場論下的軟光子輻射幾率與半經典近似下（經典的電流和量子化的電磁場之間的耦合）得到的泊松分佈結果完全一致。 -
The approximation of singular integral reciprocal of the type abel - poisson
型奇異積分導數的逼近階 -
Individual risk models approximation by compound poisson approximation is discussed. three principles are presented, and the optimal choice of poisson parameters under the three principles is discussed. it is proved that the individual risk model is also a compound binomial model ; and formulas on the calculation of the optimal parameters are given. for two distributions, exponential and pareto, calculating results are given
具體討論個體風險模型的復合poisson逼近。引入了3個準則，在這3個準則下，分別討論poisson參數的選取。證明了個體風險模型為一復合二項分佈模型在3種準則下，討論了參數的計算，並給出參數的計算公式對指數分佈和pareto分佈，給出計算結果。
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