S. Brendle
We prove a sharp logarithmic Sobolev inequality which holds for submanifolds in Euclidean space of arbitrary dimension and codimension. Like the Michael-Simon Sobolev inequality, this inequality includes a term involving the mean curvature.
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In this paper, we prove a Sobolev and isoperimetric inequalities for submanifold in weighted manifold. Our results generalize the Hoffman-Spruck's inequalities.
$L^p$-Sobolev inequalities on minimal submanifolds
本文通过最优质量传输理论，证明了在欧几里得最小子流形中任意余维数情况下具有显式常数的$L^p$-Sobolev不等式，并提供了Brendle和Eichmair周长不等式的新证明方法。
Logarithmic-Sobolev inequalities on non-compact Euclidean submanifolds: sharpness and rigidity
本文研究了非紧致欧几里得子流形上的对数Sobolev不等式，推导了精确性与刚性的结果，并给出了超收缩性估计的应用。
A logarithmic Sobolev inequality for closed submanifolds with constant length of mean curvature vector
该研究在微分几何领域证明了非负截面曲率流形中具常长度平均曲率向量的闭子流形满足对数Sobolev不等式，丰富了子流形几何的分析工具。
Fenchel-Willmore and Sobolev-type inequalities for submanifolds in non-negatively curved manifolds
本文建立Fenchel-Willmore不等式与对数Sobolev不等式的联系，推广至带边界及完备非紧子流形，并导出尖锐Sobolev型不等式，应用于曲面拓扑。
We prove a sharp logarithmic Sobolev inequality which holds for compact submanifolds without boundary in Riemannian manifold with nonnegative sectional curvature of arbitrary dimension and codimension, while the ambient manifold needs to have a specific Euclid-like property. Like the Michael-Simon Sobolev inequality, this inequality includes a term involving the mean curvature. This extends a recent result of S. Brendle with Euclidean setting.
Some of the most known integral inequalities are the Sobolev, Hardy and Rellich inequalities in Euclidean spaces. In the context of submanifolds, the Sobolev inequality was proved by Michael-Simon and Hoffman-Spruck. Since then, a sort of applications to the submanifold theory has been derived from those inequalities. Years later, Carron obtained a Hardy inequality for submanifolds in Hadamard spaces. In this paper, we prove the general Hardy and Rellich Inequalities for submanifolds in Hadamard spaces. Some applications are given and we also analyse the equality cases.
Sobolev Inequalities in Spacelike Submanifolds of Minkowski Space
本文将ABP估计方法应用于Minkowski空间$\mathbb R^{n,1}$中的类空子流形，导出了Michael-Simon型不等式，并在超曲面平均凸的条件下得到了不含平均曲率项的Sobolev不等式。
The Log-Sobolev inequality for a submanifold in manifolds with asymptotic non-negative intermediate Ricci curvature
本文在具有渐近非负中间里奇曲率和欧氏体积增长的完备非紧黎曼流形上，证明了子流形的尖锐对数-Sobolev不等式，推广了Dong-Lin-Lu等人的已有结果。
Optimal Transport Approach to Michael-Simon-Sobolev Inequalities in Manifolds with Intermediate Ricci Curvature Lower Bounds
该研究将最优输运的McCann定理推广至子流形场景，证明了满足中间Ricci曲率下界条件的流形内子流形的Michael-Simon-Sobolev不等式，涵盖了已有相关研究结论的变体情形。
Pólya--Szegö Inequality on Submanifolds of Riemannian Manifolds with Nonnegative Curvature and Applications
本文证明了非负曲率黎曼流形子流形上的Pólya--Szegö不等式，并由此推导出多种函数不等式，其常数与欧氏情形一致。
After works by Michael and Simon [10], Hoffman and Spruck [9], and White [14], the celebrated Sobolev inequality could be extended to submanifolds in a huge class of Riemannian manifolds. The universal constant obtained depends only on the dimension of the submanifold. A sort of applications to the submanifold theory and geometric analysis have been obtained from that inequality. It is worthwhile to point out that, by a Nash Theorem, every Riemannian manifold can be seen as a submanifold in some Euclidean space. In the same spirit, Carron obtained a Hardy inequality for submanifolds in Euclide…
Logarithmic Sobolev inequality in manifolds with nonnegative curvature via the ABP method
本文通过ABP方法，在非负曲率流形上建立了最优的对数Sobolev不等式，并揭示了最优常数与渐近体积比的关系。
We prove a Sobolev inequality which holds on submanifolds in Euclidean space of arbitrary dimension and codimension. This inequality is sharp if the codimension is at most 2. As a special case, we obtain a sharp isoperimetric inequality for minimal submanifolds in Euclidean space of codimension at most 2.
Given a three dimensional pseudo-Einstein CR manifold $(M,T^{1,0}M,θ)$, we study the existence of a contact structure conformal to $θ$ for which the logarithmic Hardy-Littlewood-Sobolev (LHLS) inequality holds. Our approach closely follows \cite{Ok1} in the Riemannian setting. For this purpose, we introduce the notion of Robin mass as the constant term appearing in the expansion of the Green's function of the $P'$-operator. We show that the LHLS inequality appears when we study the variation of the total mass under conformal change. Then we exhibit an Aubin type result guaranteeing the existen…
The Logarithmic Sobolev inequality on non-compact self-shrinkers
本文利用 ABP 方法将 Brendle 关于闭自收缩子的最优对数 Sobolev 不等式推广到欧氏空间中完备、非紧、适当嵌入的自收缩子，得到 Ecker 结果的尖锐版本。
Proof of the Michael-Simon-Sobolev inequality using optimal transport
本文用最优输运方法重新证明了 Michael-Simon-Sobolev 不等式，并指出该不等式在余维数为 2 的子流形情形下达到最优。
We show that gradient shrinking, expanding or steady Ricci solitons have potentials leading to suitable reference probability measures on the manifold. For shrinking solitons, as well as expanding soltions with nonnegative Ricci curvature, these reference measures satisfy sharp logarithmic Sobolev inequalities with lower bounds characterized by the geometry of the manifold. The geometric invariant appearing in the sharp lower bound is shown to be nonnegative. We also characterize the expanders when such invariant is zero. In the proof various useful volume growth estimates are also established…
Given a finite dimensional manifold $N$, the group $\operatorname{Diff}_{\mathcal S}(N)$ of diffeomorphism of $N$ which fall suitably rapidly to the identity, acts on the manifold $B(M,N)$ of submanifolds on $N$ of diffeomorphism type $M$ where $M$ is a compact manifold with $\dim M<\dim N$. For a right invariant weak Riemannian metric on $\operatorname{Diff}_{\mathcal S}(N)$ induced by a quite general operator $L:\frak X_{\mathcal S}(N)\to Γ(T^*N\otimes\operatorname{vol}(N))$, we consider the induced weak Riemannian metric on $B(M,N)$ and we compute its geodesics and sectional curvature. For …
In this paper we present our results on the logarithmic Sobolev inequality along the Ricci flow in dimension 2.
Through the main example of the Ornstein-Uhlenbeck semigroup, the Bakry-Emery criterion is presented as a main tool to get functional inequalities as Poincaré or logarithmic Sobolev inequalities. Moreover an alternative method using the optimal mass transportation, is also given to obtain the logarithmic Sobolev inequality.
The conformal logarithmic Laplacian on the sphere: Yamabe-type problems and Sobolev spaces
该论文研究球面上的共形对数拉普拉斯算子，建立其与ℝ^N中对数拉普拉斯算子的联系，引入对应希尔伯特空间，衔接Yamabe型问题分类结果并推广至弱情形。
We extend our previous results on the logarithmic Sobolev inequality along the Ricci flow in the case $λ_0(g_0)>0$ to the case $λ_0(g_0)=0$.
Sobolev and Michael-Simon inequalities via the ABP method beyond Euclidean volume growth
本文通过改进Brendle的接触集论证，在体积非坍塌假设下发展了ABP方法，证明了包含低阶项的Michael-Simon型不等式和Varopoulos的L1-Sobolev不等式，并给出了等周轮廓的下界。
Pólya-Szegő inequalities on submanifolds with small total mean curvature
本文在总平均曲率有显式上界的条件下，对欧氏空间中的正则子流形建立了Pólya-Szegő型不等式，并由此导出Sobolev、Gagliardo-Nirenberg、谱间隙及极小子流形上的尖锐对数Sobolev不等式，同时证明了常数与曲率假设的渐近尖锐性。
Sobolev Inequality In Manifolds With Lower Quadratic Curvature Decay
本文利用ABP方法，在具有下二次曲率衰减的完备黎曼流形中，为紧致区域和子流形建立了Sobolev不等式。
We prove a sharp Sobolev inequality on manifolds with nonnegative Ricci curvature. Moreover, we prove a Michael-Simon inequality for submanifolds in manifolds with nonnegative sectional curvature. Both inequalities depend on the asymptotic volume ratio of the ambient manifold.
For some class of geometric flows, we obtain the (logarithmic) Sobolev inequalities and their equivalence up to different factors directly and also obtain the long time non-collapsing and non-inflated properties, which generalize the results in the case of Ricci flow or List-Ricci flow or harmonic-Ricci flow. As applications, for mean curvature flow in Lorentzian space with nonnegative sectional curvature and twisted Kähler-Ricci flow on Fano manifolds, we get the results above.
Geometric inequalities and the Alexandrov-Bakelman-Pucci technique
本文基于Alexandrov-Bakelman-Pucci技术，统一讨论了几何不等式的证明框架，涵盖欧几里得空间的等周不等式、子流形的均曲率不等式及Sobolev不等式等核心方法与贡献。
Logarithmic Sobolev inequalities on infinite-dimensional reduced Heisenberg groups
本文在无限维约化海森堡群上构造了热核测度，并研究了其中的亚椭圆对数Sobolev不等式。
Logarithmic Sobolev, Poincaré and Beckner Inequalities on Hyperbolic Spaces and Riemannian Manifolds
本文研究了双曲空间和黎曼流形上的对数Sobolev、泊松和Beckner不等式，通过改进的Pólya-Szegö不等式和半群方法，揭示了这些不等式对几何和等周性质的依赖性。
In this note, we derive a new logarithmic Sobolev inequality for the heat kernel on the Heisenberg group. The proof is inspired from the historical method of Leonard Gross with the Central Limit Theorem for a random walk. Here the non commutative nature of the increments produces a new gradient which naturally involves a Brownian bridge on the Heisenberg group. This new inequality contains the optimal logarithmic Sobolev inequality for the Gaussian distribution in two dimensions. We compare this new inequality with the sub-elliptic logarithmic Sobolev inequality of Hong-Quan Li and with the mo…
We derive a logarithmic Sobolev inequality along the Ricci flow without any restriction on time, which depends only on the initial metric via rudimentary geometric data, assuming only that a certain first eigenvalue is positive. As a consequence we obtain a uniform Sobolev inequality along the Ricci flow without any restriction on time. One application of it is a uniform kappa-noncollapsing estimate which holds true for all time. We also obtain similar results for bounded time without assuming the eigenvalue condition. The results extend to the Ricci flow with surgeries.
Michael-Simon Sobolev inequalities in Euclidean space
本文利用 Alexandrov-Bakelman-Pucci (ABP) 方法，证明了欧几里得空间中紧致子流形上光滑对称一致正定(0, 2)-张量场的 Michael-Simon 型不等式。
The Michael-Simon-Sobolev inequality on manifolds for positive symmetric tensor fields
本研究利用ABP方法，在非负截面曲率黎曼流形的紧子流形上，建立了光滑对称一致正定(0,2)张量场的Michael-Simon-Sobolev不等式，推广了S. Brendle的已有结果。
Rigidity for the logarithmic Sobolev inequality on complete metric measure spaces
本文研究了Bakry-Émery Ricci曲率有下界的完备度量测度空间上对数Sobolev不等式的刚性问题，使用不同于Ohta和Takatsu的方法证明了等号成立时空间分裂出Gaussian收缩孤立子。
Equality in the logarithmic Sobolev inequality
本文研究正 $\mathrm{Ric}_{\infty}$ 加权 Riemann 流形上对数 Sobolev 不等式的等号刚性，借助 Klartag 的针状分解证明等号时必分裂出一维 Gaussian 空间，并给出相关开放问题。
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