Results 11 to 20 of about 2,777,398 (185)

On the Vector Representation of Characteristic Functions

open access: yesStats, 2023
Based upon the vector representation of complex numbers and the vector exponential function, we introduce the vector representation of characteristic functions and consider some of its elementary properties such as its polar representation and a vector ...
Wolf-Dieter Richter
doaj   +1 more source

From characteristic functions to implied volatility expansions [PDF]

open access: yes, 2014
For any strictly positive martingale $S = \exp(X)$ for which $X$ has a characteristic function, we provide an expansion for the implied volatility. This expansion is explicit in the sense that it involves no integrals, but only polynomials in the log ...
Jacquier, Antoine, Lorig, Matthew
core   +1 more source

Mixtures and Characteristic Functions [PDF]

open access: yesProceedings of the National Academy of Sciences, 1970
Let g ( u | c , y ) = exp { y Σ c k ( u k - 1)} with y > 0, Σ
openaire   +3 more sources

Regarding the application limitations of the Carnot, s theorem

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2019
The purpose of this article is to perform a comparative study of a reversible heat engine with an ideal or real gas as a working fluid and to determine the change in its efficiency depending on the thermodynamic characteristics of the working fluid.
V. G. Kiselev
doaj   +1 more source

Genetic screening for hypertension and COVID-19 reveals functional variation of SPEG potentially associated with severe COVID-19 in women

open access: yesFrontiers in Genetics, 2023
The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to more than 6.4 million deaths worldwide.
Yu-Si Luo   +17 more
doaj   +1 more source

Computability of Probability Distributions and Characteristic Functions [PDF]

open access: yesLogical Methods in Computer Science, 2013
As a part of our works on effective properties of probability distributions, we deal with the corresponding characteristic functions. A sequence of probability distributions is computable if and only if the corresponding sequence of characteristic ...
Takakazu Mori   +2 more
doaj   +1 more source

Characteristic functions of regional soils: concepts and principles

open access: yesYantu gongcheng xuebao, 2023
As the starting point of the theoretical study on the regional soil characteristics, based on the classical theories of soil mechanics and soil dynamics and the actual data, the related concept, principle, criterion and demonstration are put forward ...
YUAN Xiaoming 1, LU Kunyu 1, WANG Yunlong 1, YUAN Jinyuan 2, CHEN Longwei 1
doaj   +1 more source

A Generalization of APN Functions for Odd Characteristic [PDF]

open access: yes, 2016
Almost perfect nonlinear (APN) functions on finite fields of characteristic two have been studied by many researchers. Such functions have useful properties and applications in cryptography, finite geometries and so on.
Kuroda, Masamichi, Tsujie, Shuhei
core   +2 more sources

Approximation of characteristic functions in Rk spaces

open access: yesLietuvos Matematikos Rinkinys, 1998
There is not abstract.
Feliksas Mišeikis
doaj   +3 more sources

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