Lenhard Lee Ng

  • Eads Family Professor
  • Professor of Mathematics
External address: 216 Physics Bldg, 120 Science Drive, Durham, NC 27708
Internal office address: Box 90320, Durham, NC 27708-0320
Phone: (919) 660-6972
Office Hours: 

Fall 2017:

  • Mondays 10:30-12:00
  • Tuesdays 2:45-3:45
  • Fridays 1:00-2:00

and by appointment.

Research Areas and Keywords

Geometry: Differential & Algebraic
symplectic geometry, contact geometry
Mathematical Physics
topological string theory
low-dimensional topology, knot theory
Education & Training
  • Ph.D., Massachusetts Institute of Technology 2001

Chongchitmate, W, and Ng, L. "An atlas of Legendrian knots (Accepted)." Experimental Mathematics (2011). (Academic Article)

Etnyre, J, Ng, L, and Vertesi, V. "Legendrian and transverse twist knots (Accepted)." Journal of the European Mathematical Society (2011). (Academic Article)

Ng, L. "Combinatorial knot contact homology and transverse knots." Advances in Mathematics 227.6 (2011): 2189-2219. Full Text

Khandhawit, T, and Ng, L. "A family of transversely nonsimple knots." Algebraic and Geometric Topology 10.1 (2010): 293-314. Full Text

Ng, L. "Rational symplectic field theory for Legendrian knots." Inventiones Mathematicae 182.3 (2010): 451-512. Full Text

Ng, L. "Framed knot contact homology." Duke Mathematical Journal 141.2 (2008): 365-406. Full Text

Lenhard, NG. "A skein approach to bennequin-type inequalities." International Mathematics Research Notices 2008.1 (2008). Full Text

Ng, L, Ozsvath, P, and Thurston, D. "Transverse knots distinguished by knot Floer homology." Journal of Symplectic Geometry 6.4 (2008): 461-490. (Academic Article)

NG, LL, and Sabloff, JM. "The correspondence between augmentations and rulings for legendrian knots." Pacific Journal of Mathematics 224.1 (2006): 141-150. Full Text

Muratori, MC, Stanley, JC, Ng, L, Ng, J, Gross, MUM, Tao, T, and Tao, B. "Insights from SMPY's greatest former child prodigies: Drs. Terence ("Terry") Tao and Lenhard ("Lenny") Ng reflect on their talent development." Gifted Child Quarterly 50.4 (2006): 307-324.