严格凸投影流形叶化的熵刚性

A. Savini
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引用次数: 1

摘要

让 $N$ 是具有叶状结构的紧凑流形 $\mathscr{F}_N$ 它的叶是紧致严格凸投影流形。让 $M$ 是具有叶状结构的紧凑流形 $\mathscr{F}_M$ 谁的叶是维数大于等于的紧致双曲流形 $3$. 假设有一个保叶同胚 $f:(N,\mathscr{F}_N) \rightarrow (M,\mathscr{F}_M)$ 也就是 $C^1$-常规的,仅限于叶子。在前一种情况下,存在一个定义良好的叶状体积熵的概念 $h(N,\mathscr{F}_N)$ 和 $h(M,\mathscr{F}_M)$ 它是成立的 $h(M,\mathscr{F}_M) \leq h(N,\mathscr{F}_N)$. 此外,如果相等成立,则叶必须是同质的。
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Entropy rigidity for foliations by strictly convex projective manifolds
Let $N$ be a compact manifold with a foliation $\mathscr{F}_N$ whose leaves are compact strictly convex projective manifolds. Let $M$ be a compact manifold with a foliation $\mathscr{F}_M$ whose leaves are compact hyperbolic manifolds of dimension bigger than or equal to $3$. Suppose to have a foliation-preserving homeomorphism $f:(N,\mathscr{F}_N) \rightarrow (M,\mathscr{F}_M)$ which is $C^1$-regular when restricted to leaves. In the previous situation there exists a well-defined notion of foliated volume entropies $h(N,\mathscr{F}_N)$ and $h(M,\mathscr{F}_M)$ and it holds $h(M,\mathscr{F}_M) \leq h(N,\mathscr{F}_N)$. Additionally, if equality holds, then the leaves must be homothetic.
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