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We improve an $L^2\times L^2\to L^2$ estimate for a certain bilinear operator in the finite field of size $p$, where $p$ is a prime sufficiently large. Our method carefully picks the variables to apply the Cauchy-Schwarz inequality. As a…

Classical Analysis and ODEs · Mathematics 2024-01-17 Necef Kavrut , Shukun Wu

We prove L2 x L2 to weak L1 estimates for some novel bilinear maximal operators of Kakeya and lacunary type thus extending to this setting, the works of Cordoba and of Nagel, Stein and Wainger.

Classical Analysis and ODEs · Mathematics 2016-02-12 Jose A. Barrionuevo , Jarod Hart , Lucas Oliveira

The dimer model on a planar bipartite graph can be viewed as a random surface measure. We study these fluctuations for a dimer model on the square grid with two different classes of weights and provide a condition for their equivalence. In…

Probability · Mathematics 2015-05-27 Sunil Chhita

In this article, we prove a bilinear estimate for Schr\"odinger equations on 2d waveguide, $\mathbb{R}\times \mathbb{T}$. We hope it may be of use in the further study of concentration compactness for cubic NLS on $\mathbb{R}\times…

Analysis of PDEs · Mathematics 2023-12-01 Yangkendi Deng

The efficiency of two Bayesian order estimators is studied. By using nonparametric techniques, we prove new underestimation and overestimation bounds. The results apply to various models, including mixture models. In this case, the errors…

Statistics Theory · Mathematics 2008-12-18 Antoine Chambaz , Judith Rousseau

In this work, we consider a multivariate regression model with one-sided errors. We assume for the regression function to lie in a general H\"{o}lder class and estimate it via a nonparametric local polynomial approach that consists of…

Statistics Theory · Mathematics 2021-02-11 Leonie Selk , Charles Tillier , Orlando Marigliano

In this paper we prove a quantitative multilinear limited range extrapolation theorem which allows us to extrapolate from weighted estimates that include the cases where some of the exponents are infinite. This extends the recent…

Classical Analysis and ODEs · Mathematics 2024-09-16 Zoe Nieraeth

In this article, we derive off-diagonal estimates of the Bergman kernel associated to tensor- products of the cotangent line bundle defined over a hyperbolic Riemann surface of finite volume.

Complex Variables · Mathematics 2017-04-12 Anilatmaja Aryasomayajula , Priyanka Majumder

This paper gives new two-weight bump conditions for the sparse operators related to iterated commutators of fractional integrals. As applications, the two-weight bounds for iterated commutators of fractional integrals under more general…

Classical Analysis and ODEs · Mathematics 2021-07-08 Yongming Wen , Huoxiong Wu

We consider bilinear oscillatory integrals, i.e. pseudo-product operators whose symbol involves an oscillating factor. Lebesgue space inequalities are established, which give decay as the oscillation becomes stronger ; this extends the…

Classical Analysis and ODEs · Mathematics 2010-01-05 Frederic Bernicot , Pierre Germain

We obtain some necessary and sufficient conditions for the boundedness of a family of positive operators defined on symmetric cones, we then deduce off-diagonal boundedness of associated Bergman-type operators in tube domains over symmetric…

Classical Analysis and ODEs · Mathematics 2017-09-13 Cyrille Nana , Benoît F. Sehba

We complete our theory of weighted $L^p(w_1) \times L^q(w_2) \to L^r(w_1^{r/p} w_2^{r/q})$ estimates for bilinear bi-parameter Calder\'on--Zygmund operators under the assumption that $w_1 \in A_p$ and $w_2 \in A_q$ are bi-parameter weights.…

Classical Analysis and ODEs · Mathematics 2020-04-21 Emil Airta , Kangwei Li , Henri Martikainen , Emil Vuorinen

We present a unified method to obtain weighted estimates of linear and multilinear commutators with BMO functions, that is amenable to a plethora of operators and functional settings. Our approach elaborates on a commonly used Cauchy…

Classical Analysis and ODEs · Mathematics 2020-08-13 Árpád Bényi , José María Martell , Kabe Moen , Eric Stachura , Rodolfo H. Torres

We prove an $L^2 \times L^2 \rightarrow L_t^qL_x^p $ bilinear Fourier extension estimate for the cone when $p,q$ are on the critical line $1/q=(\frac{n+1}{2})(1-1/p)$. This extends previous results by Wolff, Tao and Lee-Vargas.

Classical Analysis and ODEs · Mathematics 2011-08-15 Faruk Temur

We prove endpoint and sparse-like bounds for Bergman projectors on nonhomogeneous, radial trees $X$ that model manifolds with possibly unbounded geometry. The natural Bergman measures on $X$ may fail to be doubling, and even locally…

Classical Analysis and ODEs · Mathematics 2024-10-31 José M. Conde-Alonso , Filippo De Mari , Matteo Monti , Elena Rizzo , Maria Vallarino

In this paper, we prove bilinear sparse domination bounds for a wide class of Fourier integral operators of general rank, as well as oscillatory integral operators associated to H\"ormander symbol classes $S^m_{\rho,\delta}$ for all…

Classical Analysis and ODEs · Mathematics 2023-09-15 Tobias Mattsson

This paper presents an energy estimate in terms of the total variation of the control for bilinear infinite dimensional quantum systems with unbounded potentials. These estimates allow a rigorous construction of propagators associated with…

Optimization and Control · Mathematics 2013-02-08 Nabile Boussaid , Marco Caponigro , Thomas Chambrion

Let $T$ be a multilinear Calder\'on-Zygmund operator of type $\omega$ with $\omega(t)$ being nondecreasing and satisfying a kind of Dini's type condition. Let $T_{\Pi\vec{b}}$ be the iterated commutators of $T$ with $BMO$ functions. The…

Classical Analysis and ODEs · Mathematics 2016-05-25 Pu Zhang , Jie Sun

We suggest an upper bound on binomial coefficients that holds over the entire parameter range and whose form repeats the form of the de Moivre-Laplace approximation of the symmetric binomial distribution. Using the bound, we estimate the…

Combinatorics · Mathematics 2022-05-17 Sergey Agievich

We prove the local boundedness of the solutions to degenerate second order partial differential equations of Kolmogorov type with measurable coefficients in divergence form, under minimal integrability assumption on the lower order…

Analysis of PDEs · Mathematics 2019-07-31 Francesca Anceschi , Sergio Polidoro , Maria Alessandra Ragusa