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For Toda systems with Cartan matrix either $B_2$ or $G_2$, we prove that the local mass of blowup solutions at its blowup points converges to a finite set. Further more this finite set can be completely determined for $B_2$ Toda systems,…

Analysis of PDEs · Mathematics 2015-05-19 Chang-shou Lin , Lei Zhang

In this article we study bubbling solutions of regular $SU(3)$ Toda systems defined on a Riemann surface. There are two major difficulties corresponding to the profile of bubbling solutions: partial blowup phenomenon and bubble…

Analysis of PDEs · Mathematics 2022-06-17 Juncheng Wei , Lina Wu , Lei Zhang

We consider the so-called Toda system in a smooth planar domain under homogeneous Dirichlet boundary conditions. We prove the existence of a continuum of solutions for which both components blow-up at the same point. This blow-up behavior…

Analysis of PDEs · Mathematics 2014-11-14 Teresa D'Aprile , Angela Pistoia , David Ruiz

In this article we prove that for locally defined singular SU(n+1) Toda systems in R^2, the profile of fully bubbling solutions near the singular source can be accurately approximated by global solutions. The main ingredients of our new…

Analysis of PDEs · Mathematics 2015-05-27 Chang-Shou Lin , Juncheng Wei , Lei Zhang

We consider the $SU(n+1)$ Toda system $$(S_\lambda) \quad \left\{ \begin{aligned} & \Delta u_1 + 2\lambda e^{u_1} - \lambda e^{u_2}- \dots - \lambda e^{u_k} = 0\quad \hbox{in}\ \Omega,\\ & \Delta u_2 - \lambda e^{u_1} + 2\lambda e^{u_2} -…

Analysis of PDEs · Mathematics 2016-04-14 Monica Musso , Angela Pistoia , Juncheng Wei

In this paper, we study general Toda systems with homogeneous Neumann boundary conditions on Riemann surfaces. Assuming the surface satisfies the ``$k$-symmetric'' condition, we construct a family of bubbling solutions using singular…

Analysis of PDEs · Mathematics 2026-03-16 Zhengni Hu , Miaomiao Zhu

In this note, we consider blow-up for solutions of the SU(3) Toda system on a compact surface \Sigma. In particular, we give a complete proof of the compactness result stated by Jost, Lin and Wang and we extend it to the case of…

Analysis of PDEs · Mathematics 2015-04-20 Luca Battaglia , Gabriele Mancini

For regular $SU(3)$ Toda systems defined on Riemann surface, we initiate the study of bubbling solutions if parameters $(\rho_1^k,\rho_2^k)$ are both tending to critical positions: $(\rho_1^k,\rho_2^k)\to (4\pi, 4\pi N)$ or $(4\pi N, 4\pi)$…

Analysis of PDEs · Mathematics 2019-12-30 Lina Wu , Lei Zhang

In this paper, we study the degree counting formula of the rank two Toda system with simple singular source when $\rho_1\in(0,4\pi)\cup(4\pi,8\pi)$ and $\rho_2\notin 4\pi\mathbb{N}.$ The key step is to derive the degree formula of the…

Analysis of PDEs · Mathematics 2017-07-25 Youngae Lee , Chang-shou Lin , Wen Yang , Lei Zhang

In this paper we consider the so-called Toda System in planar domains under Dirichlet boundary condition. We show the existence of continua of solutions for which one component is blowing up at a certain number of points. The proofs use…

Analysis of PDEs · Mathematics 2014-08-01 Teresa D'Aprile , Angela Pistoia , David Ruiz

For Gauss curvature equation (or more general Toda systems) defined on two dimensional spaces, the vanishing rate of certain curvature functions on blowup points is a key estimate for numerous applications. However, if these equations have…

Analysis of PDEs · Mathematics 2018-04-23 Lei Zhang

In this paper, we continue to consider the 2-dimensional (open) Toda system (Toda lattice) for $SU(N+1)$. We give a much more precise bubbling behavior of solutions and study its existence in some critical cases

Analysis of PDEs · Mathematics 2016-08-16 Jürgen Jost , Chang-Shou Lin , Guofang Wang

In this article we obtain total masses of solutions to the Toda system associated to a general simple Lie algebra with singular sources at the origin. The determination of such total masses is one of the important steps towards establishing…

Analysis of PDEs · Mathematics 2025-03-18 Debabrata Karmakar , Chang-Shou Lin , Zhaohu Nie , Juncheng Wei

In this paper, we study the blow-up analysis of an affine Toda system corresponding to minimal surfaces into ${\mathbb S}^4$ [19]. This system is an integrable system which is a natural generalization of sinh-Gordon equation [18]. By…

Analysis of PDEs · Mathematics 2020-11-04 Lei Liu , Guofang Wang

It is well known that the study of $SU(n+1)$ Toda systems is important not only to Chern-Simons models in Physics, but also to the understanding of holomorphic curves, harmonic sequences or harmonic maps from Riemann surfaces to $\mathbb…

Analysis of PDEs · Mathematics 2014-10-29 Changshou Lin , Juncheng Wei , Lei Zhang

Motivated by the study of non abelian Chern Simons vortices of non topological type in Gauge Field Theory, we analyse the solvability of planar Liouville systems of Toda type in presence of singular sources. We identify necessary and…

Analysis of PDEs · Mathematics 2016-06-22 Arkady Poliakovsky , Gabriella Tarantello

For singular $SU(3)$ Toda systems, we prove that the limit of energy concentration is a finite set. In addition, for fully bubbling solutions we use Pohozaev identity to prove a uniform estimate. Our results extend previous results of…

Analysis of PDEs · Mathematics 2016-01-20 Changshou Lin , Juncheng Wei , Lei Zhang

We consider generic 2 x 2 singular Liouville systems on a smooth bounded domain in the plane having some symmetry with respect to the origin. We construct a family of solutions to which blow-up at the origin and whose local mass at the…

Analysis of PDEs · Mathematics 2016-10-04 Luca Battaglia , Angela Pistoia

This paper establishes certain existence and classification results for solutions to $SU(n)$ Toda systems with three singular sources at 0, 1, and $\infty$. First, we determine the necessary conditions for such an $SU(n)$ Toda system to be…

Analysis of PDEs · Mathematics 2016-10-12 Chang-Shou Lin , Zhaohu Nie , Juncheng Wei

In this paper we introduce a flow to study the Toda system, which we call {\it Toda flow.} More generally, we introduce a flow of the Liouville systems, formulated as a coupled parabolic system with nonlocal interactions. Finite-time…

Differential Geometry · Mathematics 2026-02-25 Yong Luo , Linlin Sun , Guofang Wang
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