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In this work we demonstrate a surprising way of exploitation of the mosaic--skeleton approximations for efficient numerical solving of aggregation equations with many applied kinetic kernels. The complexity of the evaluation of the…

Numerical Analysis · Mathematics 2025-01-20 Roman R. Dyachenko , Sergey A. Matveev , Bulat I. Valiakhmetov

The Schrodinger equation incorporating the long-range Coulomb potential takes the form of a Fredholm equation whose kernel is singular on its diagonal when represented by a basis bearing a continuum of states, such as in a Fourier-Bessel…

Mathematical Physics · Physics 2011-05-06 N. Michel

We derive a singular version of the Sphere Covering Inequality which was recently introduced in [42], suitable for treating singular Liouville-type problems with superharmonic weights. As an application we deduce new uniqueness results for…

Analysis of PDEs · Mathematics 2018-10-11 Daniele Bartolucci , Changfeng Gui , Aleks Jevnikar , Amir Moradifam

We consider It\^o uniformly nondegenerate equations with random coefficients. When the coefficients satisfy some low regularity assumptions with respect to the spatial variables and Malliavin differentiability assumptions on the sample…

Probability · Mathematics 2021-11-11 Guohuan Zhao

On compact Riemannian manifolds, we prove a decomposition theorem for arbitrarily bounded energy sequence of solutions of a singular elliptic equation.

Analysis of PDEs · Mathematics 2017-01-03 Youssef Maliki , Fatima Zohra Terki

This paper explores the well-posedness of the Cauchy problem for the Fokker-Planck equation associated with the partial differential operator $L$ with low regularity condition. To address uniqueness, we apply a recently developed…

Probability · Mathematics 2025-06-03 Haesung Lee

The global existence of mass-conserving weak solutions to the Safronov-Dubovskii coagulation equation is shown for the coagulation kernels satisfying the at most linear growth for large sizes. In contrast to previous works, the proof mainly…

Analysis of PDEs · Mathematics 2023-03-28 Mashkoor Ali , Pooja Rai , Ankik Kumar Giri

In this paper, we mainly consider the global solvability of smooth solutions for the Cauchy problem of the three-dimensional Landau-Lifshitz-Slonczewski equation in the Morrey space. We derive the covariant complex Ginzburg-Landau equation…

Analysis of PDEs · Mathematics 2023-07-13 Chenlu Zhang , Huaqiao Wang

This paper deals with the existence and uniqueness of solutions to kinetic equations describing alignment of self-propelled particles. The particularity of these models is that the velocity variable is not on the euclidean space but…

Analysis of PDEs · Mathematics 2023-05-10 Marc Briant , Nicolas Meunier

We solve the Cauchy problem associated to the space homogeneous Boltzmann equation with an angle-potential singular concentration modeling the collision kernel, proposed in 2013 by Bobylev and Potapenko. The potential under consideration…

Analysis of PDEs · Mathematics 2016-11-22 S. Akopian , I. M. Gamba

We prove global regularity, scattering and a priori bounds for the energy critical Maxwell-Klein-Gordon equation relative to the Coulomb gauge on (1+4)-dimensional Minkowski space. The proof is based upon a modified Bahouri-Gerard profile…

Analysis of PDEs · Mathematics 2015-11-23 Joachim Krieger , Jonas Luhrmann

Let L --> X be a complex line bundle over a compact connected Riemann surface. We consider the abelian vortex equations on L when the metric on the surface has finitely many point degeneracies or conical singularities and the line bundle…

Differential Geometry · Mathematics 2021-06-28 J. M. Baptista , Indranil Biswas

We consider the Cauchy problem for the logarithmic Schr\"odinger equation and prove uniqueness of weak $H^s(\mathbb{R}^d)$ solutions for $s\in(0,1)$, which improves on the previous uniqueness result in $H^1(\mathbb{R}^d)$. The proof is…

Analysis of PDEs · Mathematics 2025-03-27 Masayuki Hayashi

We obtain necessary conditions and sufficient conditions on the existence of solutions to the Cauchy problem for a fractional semilinear heat equation with an inhomogeneous term. We identify the strongest spatial singularity of the…

Analysis of PDEs · Mathematics 2019-10-29 Kotaro Hisa , Kazuhiro Ishige , Jin Takahashi

The aim of this paper is to show an existence theorem for a kinetic model of coagulation-fragmentation with initial data satisfying the natural physical bounds, and assumptions of finite number of particles and finite $L^p$-norm. We use the…

Analysis of PDEs · Mathematics 2015-05-13 Damien Broizat

We prove continuity for bounded weak solutions of a nonlinear nonlocal parabolic type equation associated to a Dirichlet form with a rough kernel. The equation is allowed to be singular at the level zero, and solutions may change sign. If…

Analysis of PDEs · Mathematics 2017-10-09 Arturo de Pablo , Fernando Quirós , Ana Rodríguez

The analysis of a delayed generalized Burgers-Huxley equation (a non-linear advection-diffusion-reaction problem) with weakly singular kernels is carried out in this work. Moreover, numerical approximations are performed using the…

Numerical Analysis · Mathematics 2023-09-06 Sumit Mahajan , Arbaz Khan , Manil T. Mohan

The present paper establishes a local well-posed result for piecewise regular solutions with single shock of scalar balance laws with singular integral of convolution type kernels. In a neighborhood of the shock curve, a detailed…

Analysis of PDEs · Mathematics 2024-09-04 Lorena Bociu , Evangelia Ftaka , Khai T. Nguyen , Jacopo Schino

We establish the existence of solutions of the Cauchy problem for a higher-order semilinear parabolic equation by introducing a new majorizing kernel. We also study necessary conditions on the initial data for the existence of local-in-time…

Analysis of PDEs · Mathematics 2019-09-13 Kazuhiro Ishige , Tatsuki Kawakami , Shinya Okabe

We establish the existence of infinitely many nonnegative, segregated solutions for the sublinearly coupled Schr\"odinger system \begin{equation*} \left\{\begin{aligned}-\Delta u+K_1(x)u&=\mu u^{p-1}+ (\sigma_1+1)\beta…

Analysis of PDEs · Mathematics 2025-11-17 Qing Guo , Chengxiang Zhang