Results 1 to 10 of about 5,694,517 (306)
Asymptotic estimates of SARS-CoV-2 infection counts and their sensitivity to stochastic perturbation. [PDF]
Chaos, 2020 Despite the importance of having robust estimates of the time-asymptotic total number of infections, early estimates of COVID-19 show enormous fluctuations. Using COVID-19 data from different countries, we show that predictions are extremely sensitive to
Faranda D +6 more
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Fast, Asymptotically Efficient, Recursive Estimation in a Riemannian Manifold
Entropy, 2019 Stochastic optimisation in Riemannian manifolds, especially the Riemannian stochastic gradient method, has attracted much recent attention. The present work applies stochastic optimisation to the task of recursive estimation of a statistical parameter ...
Jialun Zhou, Salem Said
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Asymptotic Estimates for r-Whitney Numbers of the Second Kind
Journal of Applied Mathematics, 2014 The r-Whitney numbers of the second kind are a generalization of all the Stirling-type numbers of the second kind which are in line with the unified generalization of Hsu and Shuie.
Cristina B. Corcino +2 more
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Sharp asymptotic estimates for expectations, probabilities, and mean first passage times in stochastic systems with small noise [PDF]
Communications on Pure and Applied Mathematics, 2021 Freidlin‐Wentzell theory of large deviations can be used to compute the likelihood of extreme or rare events in stochastic dynamical systems via the solution of an optimization problem.
T. Grafke +2 more
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Asymptotic estimates for the wave functions of the Dirac-Coulomb operator and applications [PDF]
Communications in Partial Differential Equations, 2021 In this paper we prove some uniform asymptotic estimates for confluent hypergeometric functions making use of the steepest-descent method. As an application, we obtain Strichartz estimates that are -averaged over angular direction for the massless Dirac ...
F. Cacciafesta +2 more
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On rational Abel – Poisson means on a segment and approximations of Markov functions
Журнал Белорусского государственного университета: Математика, информатика, 2021 Approximations on the segment [−1, 1] of Markov functions by Abel – Poisson sums of a rational integral operator of Fourier type associated with the Chebyshev – Markov system of algebraic fractions in the case of a fixed number of geometrically different
Pavel G. Patseika, Yauheni A. Rouba
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Қарағанды университетінің хабаршысы. Математика сериясы, 2023 The paper deals with the construction of minimizing sequences for the problem of minimizing a weakly nonlinearly perturbed quadratic performance index on trajectories of a weakly nonlinear system with threetempo state variables. For this purpose, the so-
G.A. Kurina, M.A. Kalashnikova
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Maximum Likelihood Estimation for the Fractional Vasicek Model
Econometrics, 2020 This paper estimates the drift parameters in the fractional Vasicek model from a continuous record of observations via maximum likelihood (ML). The asymptotic theory for the ML estimates (MLE) is established in the stationary case, the explosive case ...
Katsuto Tanaka, Weilin Xiao, Jun Yu
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Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The model of cellular circuits was considered in a single basis of functional and switching elements, which is built in accordance with the standard basis B0 consisting of Boolean functions x1 & x2, x1 ∨ x2, ˉx1. In this model, both inputs and outputs of
S.A. Lozhkin, V.S. Zizov
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Basic asymptotic estimates for powers of Wallis’ ratios
Cubo, 2021 For any $a\in\R$, for every $n\in\N$, and for $n$-th Wallis' ratio $w_n:=\prod_{k=1}^n\frac{2k-1}{2k}$, the relative error $r_{\,\!_0}(a,n):=\big(v_{\,\!_0}(a,n)-w_n^a\big)/w_n^a$ of the approximation $w_n^a\approx v_{\,\!_0}(a,n):=(\pi n)^{-a/2} $ is ...
Vito Lampret
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