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1 CombinatorialRiddle source 2020-06-26 12:50:21 2020-06-26 14:32:30 A combinatorial riddle from Assaf: Prove $\sum_{k=0}^n \binom{2(n-k)}{n-k}\binom{2k}{k}=4^n$.

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  1. Studied 2020-02-03 03:30:21: BMT20 - Braids, mutations and twists in algebra and geometry - Uppsala University, Sweden.
  2. Studied 2020-05-17 17:07:36: NCNGT 2020.
  3. Studied 2020-06-03 10:31:00: [2006.01303] Christine Ruey Shan Lee, Roland van der Veen- Cancellations in the degree of the colored Jones polynomial.
  4. Studied 2020-06-05 17:18:50: [math-0206258] Tim D. Cochran- Noncommutative knot theory.
  5. Studied 2020-06-09 05:49:12: [2006.03861] Noboru Ito, Natsumi Oyamaguchi- Gauss diagram formulas of Vassiliev invariants of spatial 2-bouquet graphs.
  6. Studied 2020-06-09 05:50:46: [2006.04032] Julia Viro, Oleg Viro- Fundamental group in the projective knot theory.
  7. Studied 2020-06-09 05:53:04: [2006.03954] Arthur Jaffe, Zhengwei Liu- A Mathematical Picture Language Project.
  8. Studied 2020-06-12 14:24:37: [2006.06101] Alexander Polishchuk- Geometrization of trigonometric solutions of the associative and classical Yang-Baxter equations.
  9. Studied 2020-06-15 19:19:53: Byrne\[CloseCurlyQuote]s Euclid.
  10. Studied 2020-06-16 07:29:20: [2006.07706] Jonathan Zung- Taut foliations, left-orders, and pseudo-Anosov mapping tori.
  11. Studied 2020-06-16 07:33:52: [2006.08007] Jacob Mostovoy- A presentation for the planar pure braid group.
  12. Studied 2020-06-16 12:03:15: The Octopaper - Science Integrity Digest.
  13. Studied 2020-06-24 06:39:04: [1308.2047v2] Antonio Sartori- The Alexander polynomial as quantum invariant of links.
  14. Studied 2020-06-30 06:38:31: [2006.15836] Eduardo Ochs- On my favorite conventions for drawing the missing diagrams in Category Theory.

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[1308.2047v2] Antonio Sartori- The Alexander polynomial as quantum invariant of links.url   [2006.01303] Christine Ruey Shan Lee, Roland van der Veen- Cancellations in the degree of the colored Jones polynomial.url   [2006.03861] Noboru Ito, Natsumi Oyamaguchi- Gauss diagram formulas of Vassiliev invariants of spatial 2-bouquet graphs.url   [2006.03954] Arthur Jaffe, Zhengwei Liu- A Mathematical Picture Language Project.url   [2006.04032] Julia Viro, Oleg Viro- Fundamental group in the projective knot theory.url   [2006.06101] Alexander Polishchuk- Geometrization of trigonometric solutions of the associative and classical Yang-Baxter equations.url   [2006.07706] Jonathan Zung- Taut foliations, left-orders, and pseudo-Anosov mapping tori.url   [2006.08007] Jacob Mostovoy- A presentation for the planar pure braid group.url   [2006.15836] Eduardo Ochs- On my favorite conventions for drawing the missing diagrams in Category Theory.url   2014-05 - Shortcut.lnk   2020.06.06_Darlington_Pickering_Toronto_Reverse_Ride - Shortcut.lnk   2020.06.13_Sunnybrook_Park_Ride - Shortcut.lnk   2020.06.20_Penetanguishene-Tiny_Ride - Shortcut.lnk   2021-257-AnalysisII - Shortcut.lnk   AcademicPensieve - Shortcut.lnk   Agenda - Shortcut.lnk   Album - Shortcut.lnk   BarHillel - Shortcut.lnk   BMT20 - Braids, mutations and twists in algebra and geometry - Uppsala University, Sweden.url   Byrne\[CloseCurlyQuote]s Euclid.url   CombinatorialRiddle.nb   DPG - Shortcut.lnk   Dreams - Shortcut.lnk   index.html   k=2 - Shortcut.lnk   LearningSeminarOnCategorification-2006 - Shortcut.lnk   MAASeaway-1810 - Shortcut.lnk   [math-0206258] Tim D. Cochran- Noncommutative knot theory.url   MetaCalculi - Shortcut.lnk   NCNGT 2020.url   OnlineSeminars - Shortcut.lnk   OU - Shortcut.lnk   Scherich - Shortcut.lnk   SL2Portfolio2 - Shortcut.lnk   The Octopaper - Science Integrity Digest.url   WKO4 - Shortcut.lnk