Singular integral equations with applications to travelling waves for doubly nonlinear diffusion

反应扩散方程锋面传播中产生的一个双重奇异边值问题的可解性

Solvability of a doubly singular boundary value problem arising in front propagation for reaction-diffusion equations

针对 $p$-Laplacian 型反应-扩散-对流方程行波研究中出现的含 $z^{-α}$ 奇性与零边值的双重奇异 ODE，本文在给定参数及连续系数条件下探讨其正解的可解性。

New patterns of travelling waves in the generalized Fisher-Kolmogorov equation

We prove the existence and uniqueness of a family of travelling waves in a degenerate (or singular) quasilinear parabolic problem that may be regarded as a generalization of the semilinear Fisher-Kolmogorov-Petrovski-Piscounov equation for the advance of advantageous genes in biology. Depending on the relation between the nonlinear diffusion and the nonsmooth reaction function, which we quantify precisely, we investigate the shape and asymptotic properties of travelling waves. Our method is based on comparison results for semilinear ODEs.

Existence of travelling waves and high activation energy limits for a onedimensional thermo-diffusive lean spray flame model

We provide a mathematical analysis of a thermo-diffusive combustion model of lean spray flames, for which we prove the existence of travelling waves. In the high activation energy singular limit we show the existence of two distinct combustion regimes with a sharp transition -- the diffusion limited regime and the vaporisation controlled regime. The latter is specific to spray flames with slow enough vaporisation. We give a complete characterisation of these regimes, including explicit velocities, profiles, and upper estimate of the size of the internal combustion layer. Our model is on the on…

极大粗糙奇异积分的多线性估计

Multilinear estimates for maximal rough singular integrals

本文研究带粗糙齐次核的极大多（次）线性奇异积分，在核属于球面 L^q 且满足消失矩条件时证明多线性有界性，并推出双截断情形的几乎处处收敛。

Algebraic method for constructing singular steady solitary waves: A case study

This article describes the use of algebraic methods in a phase plane analysis of ordinary differential equations. The method is illustrated by the study of capillary-gravity steady surface waves propagating in shallow water. We consider the (fully nonlinear, weakly dispersive) Serre-Green-Naghdi equations with surface tension, because it provides a tractable model that, in the same time, is not too simple so the interest of the method can be emphasised. In particular, we analyse a special class of solutions, the solitary waves, which play an important role in many fields of Physics. In capilla…