Lenny Ng

Department of Mathematics
Duke University

Office: Physics 216
Phone: 919-660-6972
Email: my surname at math dot duke dot edu
(further contact information here)

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Papers and preprints

Teaching (Spring 2023: Math 411)

Travel schedule

Contact information

Curriculum vitae

Legendrian knot and link atlases

Legendrian knot gallery

Putnam solutions

About me

Duke undergraduate research opportunities in math for summer 2023: applications for Math+ are now open (deadline February 15), as are applications for PRUV. (January 2023)

Solutions to the 2022 Putnam competition are now available. (December 2022)

I'm an organizer for Frontiers in Geometry and Topology, the 2022 graduate summer school and research conference in honor of Tom Mrowka. Here are the relevant web pages for the graduate summer school and the research conference. (May 2022)

DOmath 2022, the summer research program that I co-directed, has now concluded. If you're a student interested in participating in DOmath in future years, we invite you to join the domath-announce mailing list. (August 2022)

I currently serve as the Director of Undergraduate Research and Prizes for the Duke mathematics department. Please see the following links for information about two of our summer research programs for Duke undergraduates: PRUV, DOmath. (December 2019)

I help to organize the Triangle Topology Seminar, a joint seminar between Duke, NCSU, and UNC. Here is a link to upcoming seminars.

I am an editor for the journal Quantum Topology. Please send me a message if you are interested in submitting an article, especially in symplectic and contact topology.