(Non)collapsing researchers

People whose work on (Non)collapsing is a good place to start, in alphabetical order. No one left off is slighted: it is a way in, not a ranking.

• John Lott
• Qi S. Zhang

• RBRichard BamlerBuilt a compactness and structure theory for Ricci flow in all dimensions; with Bruce Kleiner, proved Perelman's conjecture on flow through singularities.
• SBSimon BrendleWith Schoen proved the differentiable sphere theorem; also solved the Lawson conjecture and classified three-dimensional Ricci flow singularity models.
• PCPak-Yeung ChanStudies Ricci solitons and the singularities they model: volume growth, curvature decay, unique tangent flows and Kähler flying wings.
• KCKyeongsu ChoiStudies singularities of curvature flows: ancient solutions, the mean convex neighbourhood conjecture in R^3, and roundness under Gauss curvature flow.
• RHRobert HaslhoferProved the mean convex neighbourhood conjecture at necks with collaborators, reworked mean convex flows with Kleiner, defined weak Ricci flow with Naber.
• MLMan-Chun LeeBuilds Ricci flows from rough or pinched data: Hamilton's pinching conjecture, collapsing Kähler–Ricci flows and scalar curvature rigidity.
• YLYu LiClassified Kähler Ricci shrinker surfaces with Bing Wang and, with Hanbing Fang, built a Gromov–Hausdorff structure theory for Ricci flow limits.
• YZYongjia ZhangEstablished Perelman's link between bounded entropy and noncollapsing for ancient Ricci flows, and studies their limits as metric solitons.

Who has the most papers here tagged (Non)collapsing. The count covers only what is collected on this site, mostly since 2021, and tags are assigned automatically, so it reflects activity here and nothing wider.

1. 1
   Max HallgrenNPNP-RC-462294iDKähler–Ricci flow · (Non)collapsing
   77 papers, 1 in 2022, 3 in 2025, 3 in 2026
2. 2
   Robert HaslhoferNPNP-RC-485740iDAncient solutions · Singularities
   66 papers, 2 in 2021, 1 in 2022, 1 in 2023, 1 in 2024, 1 in 2025
3. 2
   Yu LiNPNP-RC-574792iDLimit spaces & RCD · (Non)collapsing
   66 papers, 1 in 2024, 2 in 2025, 3 in 2026
4. 4
   Pak-Yeung ChanNPNP-RC-058034iDRicci solitons · (Non)collapsing
   55 papers, 1 in 2021, 2 in 2023, 1 in 2024, 1 in 2025
5. 4
   Wenkui DuNPNP-RC-763602Ancient solutions · (Non)collapsing
   55 papers, 1 in 2021, 2 in 2022, 1 in 2025, 1 in 2026
6. 4
   Wangjian JianNPNP-RC-001926iDKähler–Ricci flow · Kähler geometry
   55 papers, 1 in 2021, 1 in 2022, 1 in 2023, 2 in 2026
7. 4
   Man-Chun LeeNPNP-RC-097140iDRicci flow · 3-manifolds
   55 papers, 2 in 2023, 1 in 2024, 2 in 2025
8. 8
   Richard BamlerNPNP-RC-049877iDSingularities · (Non)collapsing
   44 papers, 1 in 2020, 2 in 2021, 1 in 2025
9. 8
   Zilu MaNPNP-RC-648634iDRicci solitons · Singularities
   44 papers, 1 in 2021, 1 in 2023, 1 in 2024, 1 in 2025
10. 8
    Yongjia ZhangNPNP-RC-054461iDSingularities · Ricci flow
    44 papers, 1 in 2021, 1 in 2023, 1 in 2024, 1 in 2026
11. 8
    Ziyi ZhaoNPNP-RC-994576(Non)collapsing · Ancient solutions
    44 papers, 1 in 2023, 2 in 2024, 1 in 2026
12. 12
    Beomjun ChoiNPNP-RC-483099iDAncient solutions · (Non)collapsing
    33 papers, 1 in 2021, 1 in 2025, 1 in 2026
13. 12
    Yuxing DengNPNP-RC-578398(Non)collapsing · Ancient solutions
    33 papers, 1 in 2024, 1 in 2025, 1 in 2026
14. 12
    Hanbing FangNPNP-RC-697204(Non)collapsing · 4-manifolds
    33 papers, 2 in 2025, 1 in 2026
15. 12
    Jian SongNPNP-RC-628757Kähler–Ricci flow · Analytic minimal model program
    33 papers, 1 in 2023, 2 in 2026
16. 12
    Junsheng ZhangNPNP-RC-254379Kähler–Ricci flow · Kähler geometry
    33 papers, 3 in 2026
17. 12
    Zhenlei ZhangNPNP-RC-904927Kähler–Ricci flow · Kähler geometry
    33 papers, 3 in 2026
18. 12
    Jingze ZhuNPNP-RC-097908iDAncient solutions · Mean curvature flow
    33 papers, 1 in 2021, 1 in 2022, 1 in 2025
19. 12
    Xiaohua ZhuNPNP-RC-558904Kähler–Ricci flow · Kähler–Ricci solitons
    33 papers, 1 in 2023, 2 in 2024

Pairs with several joint papers on (Non)collapsing here, in alphabetical order.

• Pak-Yeung Chan and Zilu Ma 3 joint papers
• Pak-Yeung Chan and Yongjia Zhang 3 joint papers
• Ronan Conlon and Max Hallgren 2 joint papers
• Wangjian Jian and Jian Song 3 joint papers
• Zilu Ma and Yongjia Zhang 3 joint papers
• Weimin Sheng and Ye Zhu 2 joint papers
• Tongxin Xu and Zhenlei Zhang 2 joint papers
• Ziyi Zhao and Xiaohua Zhu 3 joint papers

Trace the chain between any two people with the connection finder.

36 people with two or more papers on (Non)collapsing here. The full directory has everyone.

• Richard Bamler
• Simon Brendle
• Pak-Yeung Chan
• Hanci Chi
• Beomjun Choi
• Kyeongsu Choi
• Ronan Conlon
• Yuxing Deng
• Rohit Dhormare
• Wenkui Du
• Hanbing Fang
• Max Hallgren
• Robert Haslhofer
• Ming Hsiao
• Shaochuang Huang
• Wangjian Jian
• Yi Lai
• Man-Chun Lee
• Yu Li
• M. J. Luo
• Stephen Lynch
• Zilu Ma
• Zhuo Peng
• Weimin Sheng
• Miles Simon
• Jian Song
• Haoyuan Sun
• Raphael Tsiamis
• Tongxin Xu
• Junsheng Zhang
• Yongjia Zhang
• Zhenlei Zhang
• Ziyi Zhao
• Jingze Zhu
• Xiaohua Zhu
• Ye Zhu

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