Results 11 to 20 of about 10,947 (207)

Dirichlet approximation and universal Dirichlet series

open access: yesProceedings of the American Mathematical Society, 2017
We characterize the uniform limits of Dirichlet polynomials on a right half plane. In the Dirichlet setting, we find approximation results, with respect to the Euclidean distance and to the chordal one as well, analogous to classical results of Runge, Mergelyan and Vituškin. We also strengthen the notion of universal Dirichlet series.
Aron, R.M.   +4 more
openaire   +5 more sources

A connection between power series and Dirichlet series [PDF]

open access: yes, 2021
[EN] We prove that for any convergent Laurent series f(z) = ∞n=−k anzn with k ≥ 0, there is a meromorphic function F(s) on C whose only possible poles are among the integers n = 1, 2, ..., k, having residues Res(F; n) = a−n/(n − 1)!, and satisfying F(−
Ruiz, Francisco J.   +4 more
core   +1 more source

Lattice permutations and Poisson-Dirichlet distribution of cycle lengths [PDF]

open access: yes, 2012
We study random spatial permutations on ℤ3 where each jump x↦π(x) is penalized by a factor e−T∥x−π(x)∥2 . The system is known to exhibit a phase transition for low enough T where macroscopic cycles appear.
Daniel Ueltschi   +6 more
core   +1 more source

On regular variation of entire Dirichlet series

open access: yesМатематичні Студії, 2023
Consider an entire (absolutely convergent in $\mathbb{C}$) Dirichlet series $F$ with the exponents $\lambda_n$, i.e., of the form $F(s)=\sum_{n=0}^\infty a_ne^{s\lambda_n}$, and, for all $\sigma\in\mathbb{R}$, put $\mu(\sigma,F)=\max\{|a_n|e^{\sigma ...
P. V. Filevych, O. B. Hrybel
doaj   +1 more source

Pseudostarlikeness and Pseudoconvexity of Multiple Dirichlet Series

open access: yesUniversal Journal of Mathematics and Applications, 2023
Let $p\in {\Bbb N}$, $s=(s_1,\ldots,s_p)\in {\Bbb C}^p$, $h=(h_1,\ldots,h_p)\in {\Bbb R}^p_+$, $(n)=(n_1,\ldots,n_p)\in {\Bbb N}^p$ and the sequences $\lambda_{(n)}=(\lambda^{(1)}_{n_1},\ldots,\lambda^{(p)}_{n_p})$ are such that $0<\lambda^{(j)}_1 ...
Myroslav Sheremeta
doaj   +1 more source

Generative Supervised Classification Using Dirichlet Process Priors. [PDF]

open access: yes, 2010
Choosing the appropriate parameter prior distributions associated to a given Bayesian model is a challenging problem. Conjugate priors can be selected for simplicity motivations.
Davy, Manuel, Tourneret, Jean-Yves
core   +1 more source

Sampling from Dirichlet process mixture models with unknown concentration parameter: mixing issues in large data implementations [PDF]

open access: yes, 2014
We consider the question of Markov chain Monte Carlo sampling from a general stick-breaking Dirichlet process mixture model, with concentration parameter (Formula presented.).
Silvia Liverani   +5 more
core   +1 more source

Discrete universality of absolutely convergent Dirichlet series

open access: yesMathematical Modelling and Analysis, 2022
In the paper, an universality theorem of discrete type on the approximation of analytic functions by shifts of a special absolutely convergent Dirichlet series is obtained.
Mindaugas Jasas   +3 more
doaj   +1 more source

The growth of Dirichlet series [PDF]

open access: yes, 2012
summary:We define Knopp-Kojima maximum modulus and the Knopp-Kojima maximum term of Dirichlet series on the right half plane by the method of Knopp-Kojima, and discuss the relation between them.
Gu, Zhendong, Sun, Daochun
core   +1 more source

A nonparametric predictive alternative to the Imprecise Dirichlet Model: the case of a known number of categories [PDF]

open access: yes, 2006
Nonparametric Predictive Inference (NPI) is a general methodology to learn from data in the absence of prior knowledge and without adding unjustified assumptions.
Augustin, Thomas   +3 more
core   +1 more source

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