Results 41 to 50 of about 11,706 (202)

The Benjamin–Ono Equation in the Zero‐Dispersion Limit for Rational Initial Data: Generation of Dispersive Shock Waves

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT The leading‐order asymptotic behavior of the solution of the Cauchy initial‐value problem for the Benjamin–Ono equation in L2(R)$L^2(\mathbb {R})$ is obtained explicitly for generic rational initial data u0$u_0$. An explicit asymptotic wave profile uZD(t,x;ε)$u^\mathrm{ZD}(t,x;\epsilon)$ is given, in terms of the branches of the multivalued ...
Elliot Blackstone, Louise Gassot, Patrick Gérard, Peter D. Miller   +3 more
wiley   +1 more source

On twisted Fourier analysis and convergence of Fourier series on discrete groups

, 2008
We study norm convergence and summability of Fourier series in the setting of reduced twisted group $C^*$-algebras of discrete groups. For amenable groups, F{\o}lner nets give the key to Fej\'er summation.
A. Connes, A. Connes, A. Figà-Talamanca, A. Kleppner, A. Kleppner, A. Paterson, A. Valette, A. Valette, A. Valette, A.L. Carey, A.Yu. Ol’shanskiĭ, B. Dorofaeff, C. Berg, C. Nebbia, C.A. Akemann, E. Bédos, E. Ghys, E.G. Effros, Erik Bédos, F. Luef, F. Luef, G. Fendler, G. Fendler, G. Mackey, G. Pisier, G. Zeller-Meier, I. Chatterji, J. Bellissard, J. Bellissard, J. Brodzki, J. Cannière de, J. Dixmier, J. Dixmier, J. Dixmier, J.-L. Sauvageot, J.-L. Sauvageot, J.A. Packer, J.A. Packer, J.A. Packer, J.A. Packer, J.A. Packer, J.E. Humphreys, J.M. Cohen, J.P. Pier, K. Gröchenig, K.R. Davidson, L.B. Schweitzer, M. Bożejko, M. Bożejko, M. Bożejko, M. Bożejko, M. Bożejko, M. Cowling, M. Cowling, M. Cowling, M. Gromov, M. Leinert, M. Marcolli, M.A. Picardello, N. Higson, N. Ozawa, N. Weaver, N.B. Backhouse, N.B. Backhouse, P. Eymard, P. Jolissaint, P. Jolissaint, P. Jolissaint, P. la Harpe de, P. la Harpe de, P. la Harpe de, P.-A. Cherix, R. Exel, R. Ji, R. Mercer, R.B. Howlett, Roberto Conti, S. Wagon, T. Januszkiewicz, U. Haagerup, U. Haagerup, V. Flory, V. Mathai, V. Paulsen, X. Chen   +84 more
core   +2 more sources

Pointwise multipliers for Campanato spaces on Gauss measure spaces [PDF]

Nagoya Mathematical Journal, 2014
Abstract In this paper, the authors characterize pointwise multipliers for Campanato spaces on the Gauss measure space (ℝ n ,| · |,γ), which includes BMO(γ) as a special case. As applications, several examples of the pointwise multipliers are given. Also, the authors give an example of a nonnegative function in BMO(γ) but not in BLO(γ).
Liu, Liguang, Yang, Dachun
openaire   +2 more sources

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati, Augusto Del Zotto, Klaus Widmayer   +2 more
wiley   +1 more source

Pointwise multipliers between weighted copson and cesàro function spaces

Mathematica Slovaca, 2019
Abstract In this paper the solution of the pointwise multiplier problem between weighted Copson function spaces Copp1,q1(u1, v1) and weighted Cesàro function spaces Cesp2,q2(u2, v2) is presented, where p1, p2, q1, q2 ∈ (0, ∞), p2 ≤ q2 and u1, u2, v1, v2 are weights on (0, ∞).
Gogatishvili, Amiran, Mustafayev, Rza Ch., Unver, Tugce   +2 more
openaire   +4 more sources

Front Propagation Through a Perforated Wall

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We consider a bistable reaction– diffusion equation ut=Δu+f(u)$u_t=\Delta u +f(u)$ on RN${\mathbb {R}}^N$ in the presence of an obstacle K$K$, which is a wall of infinite span with many holes. More precisely, K$K$ is a closed subset of RN${\mathbb {R}}^N$ with smooth boundary such that its projection onto the x1$x_1$‐axis is bounded and that ...
Henri Berestycki, François Hamel, Hiroshi Matano   +2 more
wiley   +1 more source

AI‐Driven Optimization of a Hybrid PV–Wind–BESS Microgrid for a Rural Educational Institution in Developing Countries

Energy Science &Engineering, EarlyView.
An AI‐driven CNN–LSTM forecasting framework is integrated with HOMER Pro to optimally design a grid‐connected PV–wind–BESS microgrid for a rural school in Bangladesh, achieving 91.7% renewable penetration, low energy cost (0.0397 USD/kWh), and an 81.5% reduction in CO2 emissions. ABSTRACT Hybrid renewable microgrid planning in HOMER Pro often relies on
Robiul Khan, Md. Wajed Ali, Md. Feroz Ali, Md. Shafiul Alam, Mohammad Ali, Imil Hamda Imran   +5 more
wiley   +1 more source

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

Journal of Forecasting, EarlyView.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

Electricity Price Prediction Using Multikernel Gaussian Process Regression Combined With Kernel‐Based Support Vector Regression

Journal of Forecasting, EarlyView.
ABSTRACT This paper presents a new hybrid model for predicting German electricity prices. The algorithm is based on a combination of Gaussian process regression (GPR) and support vector regression (SVR). Although GPR is a competent model for learning stochastic patterns within data and for interpolation, its performance for out‐of‐sample data is not ...
Abhinav Das, Stephan Schlüter, Lorenz Schneider   +2 more
wiley   +1 more source

Pointwise Multipliers on BMO Spaces with Non-doubling Measures

Taiwanese Journal of Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Wei, Nakai, Eiichi, Yang, Dongyong
openaire   +3 more sources