نتایج جستجو برای: poisson c

تعداد نتایج: 1087769  

Journal: :Kyungpook mathematical journal 2008

Journal: :Journal of Mathematical Physics 2021

We study a holomorphic Poisson structure defined on the linear space $S(n,d):= {\rm Mat}_{n\times d}(\mathbb{C}) \times Mat}_{d\times n}(\mathbb{C})$ that is covariant under natural left actions of standard ${\rm GL}(n,\mathbb{C})$ and GL}(d,\mathbb{C})$ Poisson-Lie groups. The brackets matrix elements contain quadratic constant terms, tensor non-degenerate dense subset. Taking $d=1$ special ca...

1995
Pavel Etingof David Kazhdan

This paper consists of two parts. In the first part we show that any Poisson algebraic group over a field of characteristic zero and any Poisson Lie group admits a local quantization. This answers positively a question of Drinfeld and generalizes the results of [BFGP] and [BP]. In the second part we apply our techniques of quan-tization to obtain some nontrivial examples of quantization of Pois...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده برق و کامپیوتر 1391

در این پایان نامه دریک شبکه اقتضائی سیار و با فرضیات مشخص برای شبکه ، دو مدل تحرک برای جابجایی گره ها در نظر گرفته شد و چهار معیار تاخیر انتها به انتها، تعداد گام، نرخ تحویل بسته ها و سربار مسیریابی به عنوان ملاک مقایسه عملکرد شبکه محاسبه و مقایسه شدند. از چهار منبع ترافیک cbr ، exponential ، pareto و poisson به عنوان تولید کننده بسته ها استفاده شد. با معیار تاخیر انتها به انتها، در سرعت های م...

Journal: :journal of biostatistics and epidemiology 0
mahmood sheikh-fathollahi department of social medicine and occupational environment research center, medical school, rafsanjan university of medical sciences, rafsanjan, iran mahmood mahmoodi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran arash jalali department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran

b a c k g r o u n d & aim: the excess hazard rate proposed by andersen and vaeth may underestimate the long-term excess hazard rate for cancer survival. zahl explained the phenomenon by continuous selection of the most robust individuals after diagnosis. he applied correlated inverse gaussian and gamma  frailty  models  to estimate  excess  intensity  and reached  a better  estimate  of the rat...

Journal: :International Mathematics Research Notices 2009

2010
J. C. van der Meer

Consider a Poisson structure on C∞(R3,R) with bracket {, } and suppose that C is a Casimir function. Then {f, g} =< ∇C, (∇g × ∇f) > is a possible Poisson structure. This confirms earlier observations concerning the Poisson structure for Hamiltonian systems that are reduced to a one degree of freedom system and generalizes the Lie-Poisson structure on the dual of a Lie algebra and the KKS-symple...

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