Erisa Hasani, Kanishka Perera
We study a class of critical Kirchhoff problems with a general nonlocal term. The main difficulty here is the absence of a closed-form formula for the compactness threshold. First we obtain a variational characterization of this threshold level. Then we prove a series of existence and multiplicity results based on this variational characterization.
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We study the following Kirchhoff equation $$- \left(1 + b \int_{\mathbb{R}^3} |\nabla u|^2 dx \right) Δu + V(x) u = f(x,u), \ x \in \mathbb{R}^3.$$ A special feature of this paper is that the nonlinearity $f$ and the potential $V$ are indefinite, hence sign-changing. Under some appropriate assumptions on $V$ and $f$, we prove the existence of two different solutions of the equation via the Ekeland variational principle and Mountain Pass Theorem.
We establish a concentration-compactness principle for the Sobolev space $W^{2,p(\cdot)}(Ω)\cap W_0^{1,p(\cdot)}(Ω)$ that is a tool for overcoming the lack of compactness of the critical Sobolev imbedding. Using this result we obtain several existence and multiplicity results for a class of Kirchhoff type problems involving $p(\cdot)$-biharmonic operator and critical growth.
Infinitely many solutions for doubly critical variable-order $p(x)$-Choquard-Kirchhoff type equations via the concentration compactness method
本文研究变光滑度双临界Choquard-Kirchhoff型方程，通过建立新的Sobolev嵌入定理、推广集中紧性引理，结合基于Krasnoselskii亏格的临界点定理，证明了该方程无穷多解的存在性。
Fractional p-Kirchhoff equation with Sobolev and Choquard singular nonlinearities
本文研究全空间上含双重非线性项与临界奇异权重的分数阶p-Kirchhoff方程，利用Cerami条件克服慢增长非线性项带来的紧性证明困难，得到非平凡弱解的存在性结果。
In this paper we establish the existence of mountain pass and negative energy weak solutions for a Kirchhoff-Schrödinger type problem in $\mathbb R^4$ involving a critical nonlinearity and a suitable small perturbation. The arisen competition between the terms due to the nonlocal coefficient and critical nonlinearity turns out to be rather interesting. The main tools used in the present work are variational methods and the Lions' Concentration Compactness Principle.
In this article, we investigate the existence and multiplicity of solutions of Kirchhoff equation \begin{equation*} \left\{ \begin{aligned} -(1+b \int_{\mathbb{R}^3}|\nabla u|^2)Δu= k(x)\frac{|u|^2 u}{|x|} +λh(x)u,~~x\in\mathbb{R}^3\\ u(x)\rightarrow 0 ~~~~~~~~~~~~~~~~~~~~~~~as ~~~~|x|\rightarrow\infty \end{aligned} \right. \end{equation*} where the potential $k(x)$ allows sign changing. Making use of Nehari manifold method and Concentration-compactness principle, we obtain the existence and multiplicity of solutions for this equation.
For a class of Kirchhoff functional, we first give a complete classification with respect to the exponent $p$ for its $L^2$-normalized critical points, and show that the minimizer of the functional, if exists, is unique up to translations. Secondly, we search for the mountain pass type critical point for the functional on the $L^2$-normalized manifold, and also prove that this type critical point is unique up to translations. Our proof relies only on some simple energy estimates and avoids using the concentration-compactness principles. These conclusions extend some known results in previous p…
We consider the nonlinear Schrödinger equations on the star graph with the Kirchhoff boundary and the repulsive Dirac delta boundary at the origin. In the present paper, we show the scattering-blowup dichotomy result below the mass-energy of the ground state on the real line. The proof of the scattering part is based on a concentration compactness and rigidity argument. Our main contribution is to give a linear profile decomposition on the star graph by using a symmetrical decomposition.
In this paper, we consider the multiplicity of solutions for a class of Kirchhoff type problems with sub-linear and critical terms on an unbounded domain. With the aid of Ekeland's variational principle and the concentration compactness principle we prove that the Kirchhoff problem has at least two solutions.
In this paper we will apply the modified potential well method and variational method to the study of the long time behaviors of solutions to a class of parabolic equation of Kirchhoff type. Global existence and blow up in finite time of solutions will be obtained for arbitrary initial energy. To be a little more precise, we will give a threshold result for the solutions to exist globally or to blow up in finite time when the initial energy is subcritical and critical, respectively. The decay rate of the $L^2(Ω)$ norm is also obtained for global solutions in these cases. Moreover, some suffici…
This paper deals with the following degenerate fractional Kirchhoff-type system with magnetic fields and critical growth: $$ \left\{ \begin{array}{lll} -\mathfrak{M}(\|u\|_{s,A}^2)[(-Δ)^s_Au+u] = G_u(|x|,|u|^2,|v|^2) + \left(\mathcal{I}_μ*|u|^{p^*}\right)|u|^{p^*-2}u \ &\mbox{in}\,\,\mathbb{R}^N,\\ \mathfrak{M}(\|v\|_{s,A})[(-Δ)^s_Av+v] = G_v(|x|,|u|^2,|v|^2) + \left(\mathcal{I}_μ*|v|^{p^*}\right)|v|^{p^*-2}v \ &\mbox{in}\,\,\mathbb{R}^N, \end{array}\right. $$ where $$\|u\|_{s,A}=\left(\iint_{\mathbb{R}^{2N}}\frac{|u(x)-e^{i(x-y)\cdot A(\frac{x+y}{2})}u(y)|^2}{|x-y|^{N+2s}}dx dy+\int_{\mathbb{…
On polyharmonic Kirchhoff double phase problems without AR-conditions
研究一类由双相算子驱动的多调和Kirchhoff问题，在弱于Ambrosetti-Rabinowitz条件下，通过变分方法和模估计获得解的存在性与多重性。
Degenerate Schr{ö}dinger-Kirchhoff $(p, N)$-Laplacian problem With singular Trudinger-Moser nonlinearity in $\mathbb{R}^N$
本文研究ℝ^N中具有奇异指数非线性的退化(p, N)-Laplacian Schrödinger-Kirchhoff问题，利用山路定理、Ekeland变分原理、奇异Trudinger-Moser不等式及新的Brézis-Lieb型引理，证明了非平凡非负解的存在性。
We consider the following Kirchhoff - Choquard equation \[ -M(\|\na u\|_{L^2}^{2})\De u = \la f(x)|u|^{q-2}u+ \left(\int_{\Om}\frac{|u(y)|^{2^*_μ}}{|x-y|^μ}dy\right)|u|^{2^*_μ-2}u \; \text{in}\; \Om,\quad u = 0 \; \text{ on } \pa \Om , \] where $\Om$ is a bounded domain in $\mathbb{R}^N( N\geq 3)$ with $C^2$ boundary, $2^*_μ=\frac{2N-μ}{N-2}$, $1<q\leq 2$, and $f$ is a continuous real valued sign changing function. When $1<q< 2$, using the method of Nehari manifold and Concentration-compactness Lemma, we prove the existence and multiplicity of positive solutions of the above problem. We also p…
In this paper, we consider a class of quasilinear stationary Kirchhoff type potential systems with Neumann Boundary conditions, which involves a general variable exponent elliptic operator with critical growth. Under some suitable conditions on the nonlinearities, we establish existence and multiplicity of solutions for the problem by using the concentration-compactness principle of Lions for variable exponents found in [5, 7] and the Mountain Pass Theorem without the Palais-Smale condition given in [43].
In this paper, we are concerned with the Neumann problem for a class of quasilinear stationary Kirchhoff-type potential systems, which involves general variable exponents elliptic operators with critical growth and real positive parameter. We show that the problem has at least one solution, which converges to zero in the norm of the space as the real positive parameter tends to infinity, via combining the truncation technique, variational method, and the concentration-compactness principle for variable exponent under suitable assumptions on the nonlinearities.
In this paper, we consider the following Kirchhoff type equation $$ -\left(a+ b\int_{\R^3}|\nabla u|^2\right)\triangle {u}+V(x)u=f(u),\,\,x\in\R^3, $$ where $a,b>0$ and $f\in C(\R,\R)$, and the potential $V\in C^1(\R^3,\R)$ is positive, bounded and satisfies suitable decay assumptions. By using a new perturbation approach together with a new version of global compactness lemma of Kirchhoff type, we prove the existence and multiplicity of bound state solutions for the above problem with a general nonlinearity. We especially point out that neither the corresponding Ambrosetti-Rabinowitz conditio…
On the $p$-fractional Schrödinger-Kirchhoff equations with electromagnetic fields and the Hardy-Littlewood-Sobolev nonlinearity
本文研究了带电磁场和 Hardy-Littlewood-Sobolev 非线性的 $p$-分数阶 Schrödinger-Kirchhoff 方程，利用分数阶集中紧致原理证明紧致性，从而确立了非平凡解的存在性。
This paper is concerned with the existence and regularity of global attractor $\mathcal A$ for a Kirchhoff wave equation with strong damping and memory in the weighted time-dependent spaces $\mathcal H$ and $\mathcal H^{1}$, respectively. In order to obtain the existence of $\mathcal A$, we mainly use the energy method in the priori estimations, and then verify the asymptotic compactness of the semigroup by the method of contraction function. Finally, by decomposing the weak solutions into two parts and some elaborate calculations, we prove the regularity of $\mathcal A$.
In this paper, we study the following nonlinear problem of Kirchhoff type with pure power nonlinearities: (a+b\ds\int_{\R^3}|D u|^2\right)Δu+V(x)u=|u|^{p-1}u, u\in H^1(\R^3), u>0, $x\in \R^3, where $a,$ $b>0$ are constants, $2<p<5$ and $V:\R^3\rightarrow\R$. Under certain assumptions on $V$, we prove that \eqref{0.1} has a positive ground state solution by using a monotonicity trick and a new version of global compactness lemma. Our main results can be viewed as a partial extension of a recent result of He and Zou in [16] concerning the existence of positive solutions to the nonlinear Kirchhof…
\noi In this article, we study the existence of non-negative solutions of the following polyharmonic Kirchhoff type problem with critical singular exponential nolinearity $$ \quad \left\{ \begin{array}{lr} \quad -M\left(\displaystyle\int_Ω|\nabla^m u|^{\frac{n}{m}}dx\right)Δ_{\frac{n}{m}}^{m} u = \frac{f(x,u)}{|x|^α} \; \text{in}\; \Om{,} \quad \quad u = \nabla u=\cdot\cdot\cdot= {\nabla}^{m-1} u=0 \quad \text{on} \quad \partial \Om{,} \end{array} \right. $$ where $\Om\subset \mb R^n$ is a bounded domain with smooth boundary, $n\geq 2m\geq 2$ and $f(x,u)$ behaves like $e^{|u|^{\frac{n}{n-m}}}$…
Generalized noncooperative Schrödinger-Kirchhoff-type systems in $\mathbb{R}^N$
本文研究含一般变指数临界增长椭圆算子的非合作 Schrödinger-Kirchhoff 型系统，结合极限指标理论、加权变指数 Sobolev 集中紧性原理与对称临界性原理，证明其存在无穷多解。
In this paper, a parabolic type Kirchhoff equation and its stationary counterpart are considered. For the evolution problem, the precise decay rates of the weak solution and of the corresponding energy functional are derived. For the stationary problem, a ground-state solution is obtained by applying Lagrange multiplier method. Moreover, the asymptotic behaviors of the general global solutions are also described. These results extend some recent ones obtained in [Threshold results for the existence of global and blow-up solutions to Kirchhoff equations with arbitrary initial energy, Computers …
We consider the fractional Schrödinger-Kirchhoff equations with electromagnetic fields and critical nonlinearity $\varepsilon^{2s}M([u]_{s,A_\varepsilon}^2)(-Δ)_{A_\varepsilon}^su + V(x)u =$ $|u|^{2_s^\ast-2}u + h(x,|u|^2)u,$ $\ \ x\in \mathbb{R}^N,$ where $ u(x) \rightarrow 0$ as $|x| \rightarrow \infty,$ and $(-Δ)_{A_\varepsilon}^s$ is the fractional magnetic operator with $0<s<1$, $2_s^\ast = 2N/(N-2s),$ $M : \mathbb{R}^{+}_{0} \rightarrow \mathbb{R}^{+}$ is a continuous nondecreasing function, $V:\mathbb{R}^N \rightarrow \mathbb{R}^+_0,$ and $A: \mathbb{R}^N \rightarrow \mathbb{R}^N$ are t…
We study well-posedness and long-time dynamics of a class of quasilinear wave equations with a strong damping. We accept the Kirchhoff hypotheses and assume that the stiffness and damping coefficients are $C^1$ functions of the $L_2$-norm of the gradient of the displacement. We first prove the existence and uniqueness of weak solutions and study their properties for a rather wide class of nonlinearities which covers the case of possible degeneration (or even negativity) of the stiffness coefficient and the case of a supercritical source term. Our main results deal with global attractors. In th…
Critical growth double phase problems: the local case and a Kirchhoff type case
本文研究了由双相算子控制且包含临界非线性的 Brezis-Nirenberg 型问题，在 Musielak-Orlicz Sobolev 空间中利用变分方法证明了局部及 Kirchhoff 型情形的紧致性与存在性结果，并给出了 Pohožaev 型不存在性结论。
In this paper, we show the existence and multiplicity of positive solutions of the following fractional Kirchhoff system\\ \begin{equation} \left\{ \begin{array}{rllll} \mc L_M(u)&=λf(x)|u|^{q-2}u+ \frac{2α}{α+β}\left|u\right|^{α-2}u|v|^β& \text{in } Ω,\\ \mc L_M(v)&=μg(x)|v|^{q-2}v+ \frac{2β}{α+β}\left|u\right|^α|v|^{β-2}v & \text{in } Ω,\\ u&=v=0 &\mbox{in } \mathbb{R}^{N}\setminus Ω, \end{array} \right. \end{equation} where $\mc L_M(u)=M\left(\displaystyle \int_Ω|(-Δ)^{\frac{s}{2}}u|^2dx\right)(-Δ)^{s} u $ is a double non-local operator due to Kirchhoff term $M(t)=a+b t$ with $a, b>0$ and f…
$p$-biharmonic Kirchhoff equations with critical Choquard nonlinearity
本文研究含临界 Choquard 非线性的 $p$-双调和 Kirchhoff 方程，通过建立集中紧性原理并结合变分法，证明不同 $r$ 下解关于参数 $λ$、$α$ 的存在性与多重性。
In this paper, we consider the initial boundary value problem for a pseudo-parabolic Kirchhoff equation with logarithmic nonlinearity. We use the potential well method to give a threshold result of global existence and finite-time blow-up for the weak solutions with initial energy $J(u_0)\leq d$. When the initial energy $J(u_0)>d$, we find another criterion for the vanishing solution and blow-up solution. We also get the exponential decay rate of the global solution and life span of the blow-up solution. Meanwhile, we study the corresponding stationary problem and establish a convergence relat…
Multiplicity and asymptotics of positive solutions for critical-concave Kirchhoff equation
本文研究临界Kirchhoff方程在凹扰动下的正解乘法及渐进行为，利用约束极小化方法、山峰定理和集中紧致原理，证明小λ下的正解存在性，并分析b和λ趋近于0时的渐近行为。
We investigate the existence, multiplicity and concentration of nontrivial solutions for the following fractional magnetic Kirchhoff equation with critical growth: \begin{equation*} \left(a\varepsilon^{2s}+b\varepsilon^{4s-3} [u]_{A/\varepsilon}^{2}\right)(-Δ)_{A/\varepsilon}^{s}u+V(x)u=f(|u|^{2})u+|u|^{\2-2}u \quad \mbox{ in } \mathbb{R}^{3}, \end{equation*} where $\varepsilon$ is a small positive parameter, $a, b>0$ are fixed constants, $s\in (\frac{3}{4}, 1)$, $2^{*}_{s}=\frac{6}{3-2s}$ is the fractional critical exponent, $(-Δ)^{s}_{A}$ is the fractional magnetic Laplacian, $A:\mathbb{R}^{…
On Choquard-Kirchhoff Type Critical Multiphase Problem
针对含 Choquard 非局部项和广义临界增长项的 Kirchhoff 型变指数多相方程，论文借助空间嵌入、集中紧性与 HLS 型不等式证明弱解的存在性与多重性。
In this paper, we consider the existence and asymptotic properties of solutions to the following Kirchhoff equation \begin{equation}\label{1}\nonumber - \Bigl(a+b\int_{\R^3} {{{\left| {\nabla u} \right|}^2}}\Bigl) Δu =λu+ {| u |^{p - 2}}u+μ{| u |^{q - 2}}u \text { in } \mathbb{R}^{3} \end{equation} under the normalized constraint $\int_{{\mathbb{R}^3}} {{u}^2}=c^2$, where $a\!>\!0$, $b\!>\!0$, $c\!>\!0$, $2\!<\!q\!<\!\frac{14}{3}\!<\! p\!\leq\!6$ or $\frac{14}{3}\!<\!q\!<\! p\!\leq\! 6$, $μ\!>\!0$ and $λ\!\in\!\R$ appears as a Lagrange multiplier. In both cases for the range of $p$ and $q$, th…
On degenerate fractional Schrödinger-Kirchhoff-Poisson equations with upper critical nonlinearity and electromagnetic fields
该研究针对带临界非线性项与电磁场的三维退化分数阶Schrödinger-Kirchhoff-Poisson方程，利用集中紧性原理、变分法及精细分析工具，证明了参数趋于零且Kirchhoff项在零点退化时解的存在性与多重性。
Existence of pullback \(\mathcal{D}\)-attractors for Kirchhoff wave equations with strong damping and delay
本文针对带强阻尼和时滞的非自治Kirchhoff波动方程，通过精细一致估计和压缩函数方法证明其拉回渐近紧性，从而建立了拉回\mathcal{D}-吸引子的存在性。
Normalized solutions for a Kirchhoff type equations with potential in $\mathbb{R}^3$
本文研究R^3中带位势的Kirchhoff型方程在质量超临界非线性下归一化基态解的存在性，通过克服非局部项导致的Pohozaev流形缺失困难，证明了对任意给定质量约束c>0基态归一化解的存在性。
Normalized solution for Kirchhoff equation with upper critical exponent and mixed Choquard type nonlinearities
本文研究了具有混合Choquard类型非线性和上临界指数的Kirchhoff方程的归一化解存在性，通过在L^2约束下进行精细能量估计恢复紧性，并克服双重非局部项困难，推广了Wang等人关于低指数区间的结果。
In this paper we are concerned with the existence and multiplicity of solutions for the fractional Choquard-type Schrödinger-Kirchhoff equations with electromagnetic fields and critical nonlinearity: \begin{eqnarray*} \begin{cases} \varepsilon^{2s}M([u]_{s,A}^2)(-Δ)_{A}^su + V(x)u = (|x|^{-α}*F(|u|^2))f(|u|^2)u + |u|^{2_s^\ast-2}u,\ \ \ x\in \mathbb{R}^N,\\ u(x) \rightarrow 0,\ \ \quad \mbox{as}\ |x| \rightarrow \infty, \end{cases} \end{eqnarray*} where $(-Δ)_{A}^s$ is the fractional magnetic operator with $0<s<1$, $2_s^\ast = 2N/(N-2s)$, $α< \min\{N, 4s\}$, $M : \mathbb{R}^{+}_{0}\rightarrow …
On the Well-posedness of a Nonlinear Fourth-Order Extension of Richards' Equation
本文研究了Richard's方程的非线性四阶扩展，通过Kirchhoff变换线性化高阶项，建立先验估计并利用紧致性定理提取唯一弱解，从而证明了原方程的适定性。
We consider a Gross-Pitaevskii equation which appears as a model in the description of dipolar Bose-Einstein condensates, without a confining external trapping potential. We describe the asymptotic dynamics of solutions to the corresponding Cauchy problem in the energy space in different configurations with respect to the mass-energy threshold, namely for initial data above and at the mass-energy threshold. We first establish a scattering criterion for the equation that we prove by means of the concentration/compactness and rigidity scheme. This criterion enables us to show the energy scatteri…
Normalized solutions to Kirchhoff equation with the Sobolev critical exponent in high dimensional spaces
本文研究高维空间中具有Sobolev临界指数的Kirchhoff方程的规范化解，通过变分方法获得了纯临界情形下解的存在性、非存在性与多重性，并在次临界情形下证明了正规范化解、局部极小解和山路解的存在性。
Existence and multiplicity of solutions for critical Kirchhoff-Choquard equations involving the fractional $p$-Laplacian on the Heisenberg group
本文研究Heisenberg群上含分数阶$p$-Laplacian的临界Kirchhoff-Choquard方程，分别借助Krasnoselskii亏格定理与分数阶集中紧性原理，证明参数$\mu$充分大时有无穷多解、充分小时有$m$对解。
In this paper, we study the nonlinear Schrödinger equation with focusing point nonlinearity in dimension one. First, we establish a scattering criterion for the equation based on Kenig-Merle's compactness-rigidity argument. Then we prove the energy scattering below and above the mass-energy threshold. We also describe the dynamics of solutions with data at the ground state threshold. Finally, we prove a blow-up criteria for the equation with initial data with arbitrarily large energy.
Optimal multipolar Lp-Hardy inequalities: ground states, criticality and variational thresholds
该论文研究多极 Lp-Hardy 不等式，通过基态表示和变分分析，在临界与次临界区域分类势能，证明阈值下紧性、极值元存在及算子临界性，并揭示系数随 p 变化的行为。
Nehari manifold approach for fractional Kirchhoff problems with extremal value of the parameter
本文研究含参数极值的非局部分数阶 Kirchhoff 问题，通过变分方法刻画退化与非退化情形下应用 Nehari 流形方法的参数阈值，并基于纤维映射精细分析证明即使参数越过极值仍存在至少两个正解。
We prove a threshold phenomenon for the existence of solitary solutions of the dispersion management equation for positive and zero average dispersion for a large class of nonlinearities. These solutions are found as minimizers of nonlinear and nonlocal variational problems which are invariant under a large non-compact group. There exists a threshold such that minimizers exist when the power of the solitons is bigger than the threshold. Our proof of existence of minimizers is rather direct and avoids the use of Lions' concentration compactness argument. The existence of dispersion managed soli…
We consider the nonlinear Klein-Gordon equation $\partial_t^2u(x,t)-\partial_x^2u(x,t)+αu(x,t)=\pm|u(x,t)|^{p-1}u(x,t)$ on a periodic metric graph (necklace graph) for $p>1$ with Kirchhoff conditions at the vertices. Under suitable assumptions on the frequency we prove the existence and regularity of infinitely many spatially localized time-periodic solutions (breathers) by variational methods. We compare our results with previous results obtained via spatial dynamics and center manifold techniques. Moreover, we deduce regularity properties of the solutions and show that they are weak solution…
Existence of ground state solutions to Kirchhoff--Choquard system in $\mathbb{R}^3$ with nonconstant potentials
本文研究 $\mathbb{R}^3$ 中具有非常数位势的线性耦合 Kirchhoff-Choquard 系统，利用 Jeanjean 单调性技巧、全局紧性引理及 Nehari-Pohozaev 流形方法，证明了非临界、上半临界和下半临界情形下非平凡基态解的存在性。
Dynamics of threshold solutions for the energy-critical inhomogeneous NLS
本文研究能量临界非齐次非线性薛定谔方程在三维至五维中阈值解的长时间动力学，构造了指数趋近基态的特殊阈值解并完成其分类。
Stability for an interface transmission problem of wave-plate equations with dynamical boundary controls
该研究针对带动态边界控制的二维波-Kirchhoff板耦合传输系统，首次开展稳定性分析，证明了无几何条件下的强稳定性，指出系统不具备指数稳定性，并建立了光滑初值下1/t型的多项式能量衰减估计。
We consider the energy-critical wave maps equation $\mathbb R^{1+2} \to \mathbb S^2$ in the equivariant case, with equivariance degree $k \geq 2$. It is known that initial data of energy $ < 8kπ$ and topological degree zero leads to global solutions that scatter in both time directions. We consider the threshold case of energy $8kπ$. We prove that the solution is defined for all time and either scatters in both time directions, or converges to a superposition of two harmonic maps in one time direction and scatters in the other time direction. In the latter case, we describe the asymptotic beha…
We consider a sequence of positive smooth critical points of the Adams-Moser-Trudinger embedding of $H^m_0$ into Orlicz spaces. We study its concentration-compactness behavior and show that if the sequence is not precompact, then the liminf of the $H^m_0$-norms of the functions is greater than or equal to a positive geometric constant.
A unified treatment of degenerate nonlocal elliptic problems
本文通过辅助问题和固定点技术，研究非局部椭圆问题的存在性、不存在性和多重性，揭示参数阈值并描述解集。
Dynamics of radial threshold solutions for generalized energy-critical Hartree equation
本文研究广义能量临界Hartree方程径向阈值解的长时间动力学，通过证明非局部结构正泡解的Ḣ^1非退化性，结合谱理论、调制分析与集中紧性刚性论证，完成了所有径向阈值解的分类。
Sharp thresholds for the Escobar functional: the Escobar-Willmore mass, geometric selection, and compactness trichotomy
研究Escobar函数在紧致黎曼流形上的半球阈值，揭示边界不变量主导的临界行为，确定质量、不变量及Green核相互作用的层级结构，揭示不同维度下的临界性与紧致性特性。
We obtain nontrivial solutions of a critical $(p,q)$-Laplacian problem in a bounded domain. In addition to the usual difficulty of the loss of compactness associated with problems involving critical Sobolev exponents, this problem lacks a direct sum decomposition suitable for applying the classical linking theorem. We show that every Palais-Smale sequence at a level below a certain energy threshold admits a subsequence that converges weakly to a nontrivial critical point of the variational functional. Then we prove an abstract critical point theorem based on a cohomological index and use it to…
On a class of critical Schrödinger-Poisson systems involving the (p,q)-Laplacian
本文研究了一类在R^3中涉及(p,q)-拉普拉斯算子的临界薛定谔-泊松系统，通过直接变分方法、山路定理和集中紧性原理，建立了正解的存在性。
Conditional scattering criteria for cylindrical threshold dynamics of the three-dimensional focusing energy-critical Schrödinger equation
研究三维聚焦能量临界薛定谔方程圆柱对称类的低于阈值散射，通过分离孤子状紧致临界元素的两个刚性入口，利用位力估计等排除入口，经紧致性约化得到条件圆柱阈值散射准则。
We consider a class of scalar field equations with anisotropic nonlocal nonlinearities. We obtain a suitable extension of the well-known compactness lemma of Benci and Cerami to this variable exponent setting, and use it to prove that the Palais-Smale condition holds at all level below a certain threshold. We deduce the existence of a ground state when the variable exponent slowly approaches the limit at infinity from below.
The Fractional-Logarithmic Laplacian: Potentials, Regularity, and Critical Compact Embeddings
本文研究分数-对数拉普拉斯算子的势理论和正则性，探讨其临界紧嵌入性质，提出新的对数Bessel空间，并讨论其与经典Bessel空间的关系。
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