Lenny Ng

Associate Professor
Mathematics Department
Duke University

Office: Physics 231
Phone: 919-660-6972
Email: ng at math dot duke dot edu
(further contact information here)


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Papers and preprints

Teaching (Fall 2014: Math 612, Math 690; Spring 2015: Math 633)

Travel schedule

Contact information

Other professional information (CV, publication list)

Mathematical links

Legendrian knot and link atlases

Legendrian knot gallery

About me











Solutions to the 2014 Putnam competition are now available. Here's a nice story about Duke's Putnam program from Duke Magazine (January-February 2010).

In the past, a panel of people at Duke, including me, have held Math Jam chats, hosted by Art of Problem Solving, to discuss Duke's undergraduate program (especially in math) with prospective students. We will not be holding a Math Jam this year (2014) but there's lots of information in the transcripts from our previous chats: November 2013; October 2012; October 2011; November 2010.


Here are the web pages for the Duke-UNC Topology Seminar and the Topology Pre-Seminar.

I am an organizer for the Fall 2015 program “Symplectic Geometry and Topology” at the Institut Mittag-Leffler in Sweden, and will be spending some time at the program during that semester.

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).