Slides for some talks


  1. Total positivity in combinatorics and representation theory, Brisbane, 2010
  2. The shape of a random affine Weyl group element, Boston 2011
  3. Laurent phenomenon algebras, Nagoya 2012
  4. Electrical networks and Lie theory, Boulder 2013
  5. Infinite reduced words, Guanajuato 2013
  6. Electroids and positroids, Minneapolis 2014
  7. Truncated Stanley symmetric functions and amplituhedron cells, Boston, 2014
  8. Totaly positivity, crystals, and Whittaker functions, CDM Lecture 1, 2014
  9. Totally nonnegative Grassmannian and the amplituhedron, CDM Lecture 2, 2014
  10. Combinatorics of electrical networks, Brunswick 2016

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