Lenny Ng

Eads Family Professor
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 2020: Math 790; Spring 2021: Math 633)

Travel schedule

Contact information

Other professional information (CV, publication list)

Mathematical links

Legendrian knot and link atlases

Legendrian knot gallery

Putnam solutions

About me

Solutions to the "2020" (February 2021) Putnam competition are now available. (February 2021)

Duke undergraduate research opportunities in math for summer 2021: applications for PRUV and DOmath are now open. If you have questions about DOmath, please email me. (January 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.