Available from this website:

• Research
• Slides from talks
• Teaching
  • Spring 2015: Math V1201: Calculus III
  • Fall 2014: Math G8000: Seminar on the Teaching of Mathematics.
  • Fall 2013: At UNC.
  • Spring 2013: At UNC.
  • Fall 2011: Math G4307: Algebraic Topology.
  • Spring 2011: Math W4052: Knot Theory.
  • Fall 2009:
    • Math V1201: Calculus III.
    • Math W4051: Topology.
  • Fall 2008:
    • Math V2020: Honors Linear Algebra.
    • Math W4051: Topology.
  • Fall 2006: Math V2010: Linear Algebra (homepage is on (old) Courseworks).
• Teaching-related activities
  • Undergraduate Student papers.
  • Barnard's Sonya Kovalevsky Day, 2012.
  • Columbia's Geometry / Topology REU.
• Current and former Ph.D. students
• Columbia's Symplectic Geometry and Gauge Theory Seminar's web page.
• Advice
  • Reading and writing mathematics on the Macintosh.
  • Graduate fellowships in mathematics.
    
  • Advice for amateur mathematicians on writing mathematics. (From Henry Cohn of Microsoft Research.)
• My previous webpage (no longer maintained).