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Yi Ni is a Professor of Mathematics at the California Institute of Technology (Caltech). He completed his Bachelor of Science degree at Peking University in 2001, followed by a Master of Science in 2003, and a Ph.D. from Princeton University in 2007. After joining Caltech as an Assistant Professor in 2009, he was promoted to Professor in 2015. His research primarily focuses on Low Dimensional Geometry and Topology, specifically in the applications of Heegaard Floer homology, gauge theory, and symplectic geometry. Additionally, his work encompasses hyperbolic geometry, combinatorial topology, geometric group theory, foliations and laminations, as well as dynamics. His contributions to the field have led to significant advancements and new understandings in these areas.
California Institute of Technology • Pasadena, CA
Teaching and conducting research in mathematics with a focus on low dimensional geometry and topology.
California Institute of Technology • Pasadena, CA
Instructing courses and engaging in mathematical research.
Most Caltech graduate programs are PhD-only. GRE General and Subject tests vary by department; many have made them optional or no longer accept them.