{"title":"探索对 dp 收敛的修改","authors":"Brian Allen , Edward Bryden","doi":"10.1016/j.na.2024.113598","DOIUrl":null,"url":null,"abstract":"<div><p>In the work by M. C. Lee, A. Naber, and R. Neumayer (Lee et al., 2023) a beautiful <span><math><mi>ɛ</mi></math></span>-regularity theorem is proved under small negative scalar curvature and entropy bounds. In that paper, the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance for Riemannian manifolds is introduced and the quantitative stability results are given in terms of this notion of distance, with important examples showing why other existing notions of convergence are not adequate in their setting. Due to the presence of an entropy bound, the possibility of long, thin splines forming along a sequence of Riemannian manifolds whose scalar curvature is becoming almost positive is ruled out. It is important to rule out such examples since the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance is not well behaved in the presences of splines that persist in the limit. Since there are many geometric stability conjectures (Gromov, 2023; Sormani, 2023) where we want to allow for the presence of splines that persist in the limit, it is crucial to be able to modify the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance to retain its positive qualities and prevent it from being sensitive to splines. In this paper we explore one such modification of the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance and give a theorem which allows one to estimate the modified <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance, which we expect to be useful in practice.</p></div>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Exploring a modification of dp convergence\",\"authors\":\"Brian Allen , Edward Bryden\",\"doi\":\"10.1016/j.na.2024.113598\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In the work by M. C. Lee, A. Naber, and R. Neumayer (Lee et al., 2023) a beautiful <span><math><mi>ɛ</mi></math></span>-regularity theorem is proved under small negative scalar curvature and entropy bounds. In that paper, the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance for Riemannian manifolds is introduced and the quantitative stability results are given in terms of this notion of distance, with important examples showing why other existing notions of convergence are not adequate in their setting. Due to the presence of an entropy bound, the possibility of long, thin splines forming along a sequence of Riemannian manifolds whose scalar curvature is becoming almost positive is ruled out. It is important to rule out such examples since the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance is not well behaved in the presences of splines that persist in the limit. Since there are many geometric stability conjectures (Gromov, 2023; Sormani, 2023) where we want to allow for the presence of splines that persist in the limit, it is crucial to be able to modify the <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span> distance to retain its positive qualities and prevent it from being sensitive to splines. 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引用次数: 0
摘要
在 M. C. Lee、A. Naber 和 R. Neumayer 的著作(Lee et al.在这篇论文中,引入了黎曼流形的 dp 距离,并根据这一距离概念给出了定量稳定性结果,还通过重要的例子说明了为什么其他现有的收敛概念在其环境中并不合适。由于熵约束的存在,排除了沿着标量曲率几乎为正的黎曼流形序列形成细长花键的可能性。排除这类例子非常重要,因为 dp 距离在存在极限持续存在的花键的情况下表现不佳。在许多几何稳定性猜想(Gromov, 2023; Sormani, 2023)中,我们都希望允许存在在极限中持续存在的花键,因此能够修改 dp 距离以保留其积极特性并防止它对花键敏感是至关重要的。在本文中,我们探讨了 dp 距离的一种修正方法,并给出了一个定理,使我们能够估算修正后的 dp 距离,我们希望它在实践中能派上用场。
In the work by M. C. Lee, A. Naber, and R. Neumayer (Lee et al., 2023) a beautiful -regularity theorem is proved under small negative scalar curvature and entropy bounds. In that paper, the distance for Riemannian manifolds is introduced and the quantitative stability results are given in terms of this notion of distance, with important examples showing why other existing notions of convergence are not adequate in their setting. Due to the presence of an entropy bound, the possibility of long, thin splines forming along a sequence of Riemannian manifolds whose scalar curvature is becoming almost positive is ruled out. It is important to rule out such examples since the distance is not well behaved in the presences of splines that persist in the limit. Since there are many geometric stability conjectures (Gromov, 2023; Sormani, 2023) where we want to allow for the presence of splines that persist in the limit, it is crucial to be able to modify the distance to retain its positive qualities and prevent it from being sensitive to splines. In this paper we explore one such modification of the distance and give a theorem which allows one to estimate the modified distance, which we expect to be useful in practice.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.