Yi Ni


Professor of Mathematics

Department of Mathematics, 253-37

Caltech, 109 Math Building (Building 15),

(temporary office for academic year 2017-2018, address: 271 South Chester Avenue)

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










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.




I coorganize a joint LA Topology Seminar (LaToP) with Francis Bonahon and Aaron Lauda of USC, and Ciprian Manolescu and Ko Honda of UCLA.

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

I may attend the following seminars:

Geometry and Topology Seminar at Caltech

Physics and Geometry Seminar at Caltech

Geometry and Topology Seminar at USC

Geometry Seminar at UCLA



I teach Ma 151a (Algebraic topology) and Ma 191a (Introduction to Heegaard Floer Homology) in Fall 2017.







        Zhongtao Wu (2010--2013)

        Faramarz Vafaee (2014--now)


Graduate students:

Liling Gu (Ph.D. 2014)

Nakul Dawra (Ph.D. 2015)

Caili Shen (left in 2016)

Siqi He (current)

Gahye Jeong (current)

Juhyun Kim (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 (2016)


Mathematics links