Results 31 to 40 of about 220,781 (280)

Computing hypergeometric functions rigorously [PDF]

open access: yes, 2016
We present an efficient implementation of hypergeometric functions in arbitrary-precision interval arithmetic. The functions ${}_0F_1$, ${}_1F_1$, ${}_2F_1$ and ${}_2F_0$ (or the Kummer $U$-function) are supported for unrestricted complex parameters and ...
Johansson, Fredrik
core   +5 more sources

Derangements and the 𝑝-adic incomplete gamma function

open access: yesTransactions of the American Mathematical Society, 2022
We introduce a p p -adic analogue of the incomplete gamma function. We also introduce quantities ( m m -values) associated to a function on natural numbers and prove a new characterization of p p -adic continuity for functions with p p -integral m m -values ...
O'Desky, Andrew, Richman, David Harry
openaire   +3 more sources

The Clumpiness of Cold Dark Matter: Implications for the Annihilation Signal [PDF]

open access: yes, 2002
We examine the expected signal from annihilation events in realistic cold dark matter halos. If the WIMP is a neutralino, with an annihilation cross-section predicted in minimal SUSY models for the lightest stable relic particle, the central cusps and ...
Bergstr  m, J. E. Taylor, J. Silk
core   +3 more sources

Asymptotic Inversion of Incomplete Gamma Functions [PDF]

open access: yesMathematics of Computation, 1992
The normalized incomplete gamma functions are defined by \[ P(a,x)={1\over{\Gamma(a)}} \int_ a^ x t^{a-1} e^{-t}dt, \qquad Q(a,x)={1\over{\Gamma(a)}} \int_ x^{+\infty} t^{a-1} e^{-t} dt, \] where \(a>0\), \(x\geq 0\). The author is interested in the \(x\)-values that solves the following (equivalent) equations: \(P(a,x)=p\), \(Q(a,x)=q\), where \(a>0\)
openaire   +1 more source

Investigation of charge sharing among electrode strips for a CdZnTe detector [PDF]

open access: yes, 2001
We have investigated charge sharing among the anode strips of a CdZnTe (CZT) detector using a 30 micrometer collimated gamma-ray beam. We compared the laboratory measurements with the predictions from our modeling of the charge transport within the ...
Barret   +6 more
core   +2 more sources

Uniform asymptotics for the incomplete gamma functions starting from negative values of the parameters [PDF]

open access: yes, 1996
We consider the asymptotic behavior of the incomplete gamma functions gamma(-a,-z) and Gamma(-a,-z) as a goes to infinity. Uniform expansions are needed to describe the transition area z~a in which case error functions are used as main approximants.
Temme, Nico M.
core   +3 more sources

Curvas de lactação de quatro grupos genéticos de mestiças Holandês-Zebu Lactation curves of four genetic groups of Holstein-Zebu crossbred cows

open access: yesRevista Brasileira de Zootecnia, 2010
Modelaram-se curvas de lactação a partir de 1.340 lactações de vacas F1 dos grupos Holandês-Gir, Holandês-Guzerá, Holandês-Nelore e Holandês-azebuado com controles leiteiros realizados a cada 14 dias, provenientes de duas fazendas.
Joana Ribeiro da Glória   +5 more
doaj   +1 more source

Some New Results for the $\mathscr{M}$-Transform Involving the Incomplete $I$-Functions [PDF]

open access: yesSahand Communications in Mathematical Analysis
Integral transformations are crucial for solving a variety of actual issues. The right choice of integral transforms aids in simplifying both integral and differential problems into a solution-friendly algebraic equation.
Sanjay Bhatter, Nishant -, Sunil Purohit
doaj   +1 more source

Extended de Montmort-Prudnikov Sum

open access: yesMathematics, 2023
Using a contour integral method, the de Montmort-Prudnikov sum is extended to derive a new series representation involving the incomplete gamma function.
Robert Reynolds, Allan Stauffer
doaj   +1 more source

Expansions of the solutions of the biconfluent Heun equation in terms of incomplete Beta and Gamma functions

open access: yes, 2016
Starting from equations obeyed by functions involving the first or the second derivatives of the biconfluent Heun function, we construct two expansions of the solutions of the biconfluent Heun equation in terms of incomplete Beta functions.
Gevorgyan, M. R.   +4 more
core   +2 more sources

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