Yi Ni

 

Professor of Mathematics

Department of Mathematics, 253-37

Caltech, 356 Linde Hall, (see the map)

1200 East California Boulevard

Pasadena, CA 91125

Email: yiniZZZ@caltechZZZ.edu

(Please REMOVE the six Z's to get the correct address.)

Telephone: (626) 395-4365

 

 

 

 

 

 

 

 

Research

My research interests include three-dimensional topology and knot theory, specifically Heegaard Floer homology and its applications.

More information about my research can be found in my Curriculum Vitae. My research papers are available here.

 

 

Seminars

I coorganize the Geometry and Topology Seminar at Caltech.

I coorganize a joint LA Topology Seminar (LaToP) with Aaron Lauda and Sheel Ganatra of USC, and Ko Honda and Sucharit Sarkar of UCLA.

I often coorganize the Southern California Topology Colloquium (SCTC).

The N+13^th SCTC will be held on Saturday, October 17^th, 2026 at Caltech.

I also organize a reading seminar on Heegaard Floer homology and related topics.

Other local seminars:

Physics and Geometry Seminar at Caltech

Topology Seminar at USC

Topology Seminar at UCLA

 

 

 

Postdocs/Students

 

Postdocs:

 

        Zhongtao Wu (2010--2013)

        Faramarz Vafaee (2014--2018)

        You Qi (2017--2019)

        Daren Chen (2023-- )

 

Graduate students:

Liling Gu (Ph.D. 2014)

Nakul Dawra (Ph.D. 2015)

Caili Shen (left in 2016)

Siqi He (Ph.D. 2018)

Gahye Jeong (Ph.D. 2018)

Juhyun Kim (Ph.D. 2021)

Alan Du (current)

Zhaojun Chen (current)

SURF students:

Eileen Li (2012),

Tim Holland, Laura (Panavia) Shou (2013),

William Ballinger, Chloe Ching-Yun Hsu, Wyatt Mackey, Tynan Ochse (2016),

William Ballinger, Tynan Ochse (2017),

Daniel Rostovtsev (2018)

Zhengyuan Shang (2019)

Ryan Leal (2024)

 

Mathematics links