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Discrete Thoughts

by Zilin Jiang

  • Previous Courses
    • 21-300 & 21-600 Fall 2011
    • 21-355 Spring 2012
    • 21-120 Fall 2012
    • 21-127 Spring 2013
    • 21-259 Fall 2013
    • 21-240 Spring 2014
    • 21-122 Fall 2014
    • 21-257 Fall 2015
    • 104018 Spring 2017
    • 104131 Winter 2017
    • 18.204 Fall 2018
    • 18.204 Spring 2019
    • 18.204 Fall 2019
    • 18.204 Spring 2020
    • 18.211 Fall 2020
    • CSE 598 Spring 2021
    • MAT 415 / MAT 512 Fall 2021
    • MAT 598 Spring 2022
  • Math Olympiad
    • MOSP 2014
    • MOSP 2015
    • MOSP 2016
    • CMOSP 2017
  • Shells on Seashore
  • Into Darkness

MOSP 2016

Instructor: Zilin Jiang, Wean Hall 7213, zj@cmu.edu

Lecture notes:

  • June 13: Area method (red)
  • June 15: Harmonic points (blue)
  • June 16: Projective geometry (black)
  • June 17: Collinearity and concurrency (red)
  • June 20: Geometric inequality (blue)
  • June 21: Circles (red)
  • June 23: Topics in geometry (blue)
  • June 24: Hard geometry (black)
  • June 28: Harder geometry (black)
  • June 30: Sangaku (red)

Recent Posts

  • On the Stirling numbers of the first kind
  • On Gromov’s theorem on groups of polynomial growth
  • On the basis exchange property
  • Minimal Distance to Pi
  • Shalom to Ning

Recent Comments

  • sam on 建筑学中的拓扑学
  • Ricardo on A Short Proof of the Nash-Williams' Partition Theorem
  • jd on Mathematical Abbreviations
  • Roy on A Probabilistic Proof of Isoperimetric Inequality
  • clan on A Probabilistic Proof of Isoperimetric Inequality

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