MAT 627 - Spring 2025 - Introduction to Quasiconformal Mappings

Class videos.

  • Lecture 01: Tue Jan 28, Course Introduction.   ( Play )
  • Lecture 02: Thur Jan 30, Quick review from Complex Analysis   ( Play )
  • Lecture 03: Tue Feb 4, Introduction to extremal length and conformal modulus.   ( Play )
  • Lecture 04: Tue Feb 6, Symmetry, Koebe's 1/4-theorem, introduction logarithmic capacity.   ( Play )
  • Lecture 05: Tue Feb 11, Logarithmic capacity.   ( Play )
  • Lecture 06: Thur Feb 13, Pfluger's theorem,   ( Play )
  • Lecture 07: Tue Feb 18, Gehring-Hayman theorem, radial limits of conformal maps   ( Play )
  • Lecture 08: Thur Feb 20, Finish harmonic measure, ellipse fields, geometric defiition.   ( Play )
  • Lecture 09: Tue Feb 25, Holder continuity of quasiconformal maps   ( Play )
  • Lecture 10: Thur Feb 27, Compactness of K-quasiconformal maps, locality   ( Play )
  • Lecture 11: Tue Mar 4, 1-QC implies conformal, quasisymmetric maps   ( Play )
  • Lecture 12: Thur Mar 6, the 3-point condition, statement of Jones-Smirnov removability theorem   ( Play )
  • Lecture 13: Tue Mar 11, Proof of Jones-Smirnov   ( Play )
  • Lecture 14: Thur Mar 13, Rickman's lemma, biLipschitz reflections   ( Play )
  • Spring Break, no classes: March 17-21.
  • Lecture 15: Tue Mar 25, Conformal Welding.   ( Play )
  • Lecture 16: Thur Mar 27, Introduction to measurable Riemann mapping theorem, absolute continuity on lines.   ( Play )
  • Lecture 17: Tue Apr 1, QC maps are differentiable, have partial in L^2   ( Play )
  • Lecture 18: Thur Apr 3, reverse Holder inequalities, Borjarski's theorem, Pompeiu formula   ( Play )
  • Lecture 19: Tue April 8, weak convergence of partials, completing proof of MRMT   ( Play )
  • Lecture 20: Thur Apr 10, Cauchy and Beurling transform, alternate proof of MRMT   ( Play )
  • Lecture 21: Tue April 15, Analytic dependence on dilatation, Introduction to Astala's area theorem   ( Play )
  • Lecture 22: Thur Apr 17,   ( Play )
  • Lecture 23: Tue April 22,   ( Play )
  • Lecture 24: Thur Apr 24,   ( Play )
  • Lecture 25: Tue Apr 29,   ( Play )
  • Lecture 26: Thur May 1,   ( Play )
  • Lecture 27: Tue May 6,   ( Play )
  • Lecture 28: Thur May 8, Last class   ( Play )