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 (Fall 2022: Math 281S, Math 790; Spring 2023: Math 411)

Travel schedule

Contact information

Curriculum vitae

Legendrian knot and link atlases

Legendrian knot gallery

Putnam solutions

About me

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)

Solutions to the 2021 Putnam competition are now available. (December 2021)

I am co-organizing a virtual seminar, Trends in Low-Dimensional Topology, intended especially for early-career researchers in topology. The parent page Virtual Low-Dimensional Topology has a great collection of links to resources in topology and a calendar of online seminars in topology and symplectic geometry. (April 2020) Update February 2021: the Trends seminar is currently on indefinite hiatus.

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.