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171201-125305: KH Day 4.
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  171207-120210: KH Day 6.
  171204-111551: KH Day 5.
  171201-125308: KH Day 4 (4).
  171201-125307: KH Day 4 (3).
  171201-125306: KH Day 4 (2).
  171201-125305: KH Day 4.
  171127-111331: KH: A 2-crossing example (4).
  171127-111330: KH: A 2-crossing example (3).
  171127-111329: KH: A 2-crossing example (2).
  171127-111328: KH: A 2-crossing example.
  171127-111327: Riddles.
  171124-142441: Khovanov homology, in theory (5).
  171124-142440: Khovanov homology, in theory (4).
  171124-142439: Khovanov homology, in theory (3).
  171124-142438: Khovanov homology, in theory (2).
  171124-142437: Khovanov homology, in theory.
  171120-110737: Categorifying Laurent polynomials.
  171120-110736: Categorifying ${\mathbb Z}$.
  171117-112505: The structure of packages.
  171117-112504: The milk-jug problem.
  171110-120930: The cow problem.
  171106-111254: Non-commutative Gaussian elimination (2).
  171106-111253: The cow problem.
  171106-111252: An order 4 torus.
  171103-133255: Non-commutative Gaussian elimination.
  171103-133254: Not solving the quintic.
  171030-110855: Solving the quadratic.
  171027-121227: The Peano Curve (2).
  171027-121226: The Peano Curve.
  171027-121225: Basic homology (7).
  171027-121223: Basic homology (6).
  171027-121222: Basic homology (5).
  171023-111128: Basic homology (4).
  171020-123521: Basic homology (3).
  171020-123520: Basic homology (2).
  171020-123519: Basic homology.
  171020-123518: From triangulations to trees.
  171016-111042: The Towers of Hanoi (2).
  171013-121553: The Towers of Hanoi.
  171013-121552: Faster Jones computations (7).
  171013-121551: Faster Jones computations (6).
  171013-121550: Faster Jones computations (5).
  171006-132436: Faster Jones computations (4).
  171006-132435: Faster Jones computations (3).
  171006-132434: Faster Jones computations (2).
  171006-132433: Faster Jones computations.
  171002-111024: EIWL 5-8 (2).
  171002-111023: EIWL 5-8.
  170929-142836: Triangulations and the Catlan numbers (5).
  170929-142835: Triangulations and the Catlan numbers (4).
  170929-142834: Triangulations and the Catlan numbers (3).
  170929-142833: Triangulations and the Catlan numbers (2).
  170929-142832: Triangulations and the Catlan numbers.
  170925-111213: Too many ways to compute the Fibonacci numbers (6).
  170925-111212: Too many ways to compute the Fibonacci numbers (5).
  170925-111211: Too many ways to compute the Fibonacci numbers (4).
  170925-111210: Too many ways to compute the Fibonacci numbers (3).
  170922-121309: Too many ways to compute the Fibonacci numbers (2).
  170922-121308: Too many ways to compute the Fibonacci numbers.
  170918-111027: Expressions in Mathematica (2).
  170918-111026: Expressions in Mathematica.
  170915-123322: The writhe.
  170915-123321: Reidemeister 1.
  170915-123320: Reidemeister 3.
  170915-123319: The Collatz problem.
  170915-123318: Smoothings in Mathematica.
  170915-123317: Notation for planar diagrams.
  170915-123316: Initial blackboard (2).
  170915-123315: Initial blackboard.
  170911-111546: The Kauffman bracket.
  170911-111545: Knot invariants and Reidemeister moves.
  170911-111544: Phase portraits.
  170911-111543: ODEs and vector fields.
  170911-111542: Class essentials.
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