Is the London Underground knotted?
Stand-up Maths Stand-up Maths
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 Published On Sep 23, 2019

Check out Geoff's video from the same day!
   • Tube Knot : Behind the Scenes  
Thanks very much to Vicki and Geoff for all their help.

If you want some more maths, and the 'rules' for finding a Tube Knot, check out the bonus content video on my second channel.
   • Bonus video: knot rules  

Henry and Sabetta also went and double-checked all of the overs and under in our knot.
   • Checking the overs and unders of a kn...  

Huge thanks to Sabetta and Henry. Here is the first video I made with them: Exploring Hyperbolic Space with VR
   • Exploring Hyperbolic Space with VR (a...  
And my spherical camera video with Henry.
   • The maths of spherical video (aka "36...  

Here is everyone's channel:
Vicki Pipe:    / vickipipe  
Geoff Marshall:    / geofftech2  
All the Stations:    / @allthestations  
Henry Segerman:    / henryseg  

Worksheet and teaching resources to find your own underground knots!
https://www.think-maths.co.uk/standup...

Here are the detailed "Carto Metro" maps you can use to check which line goes under/over which.
http://carto.metro.free.fr/metro-tram...


CORRECTIONS
- At 13:19 I call Green Park "West Park" when talking about going west. First noticed by Geoff Marshall, of course.
- Let me know if you or Geoff spot anything else!


Thanks as always for Jane Street being my principal sponsor.
https://www.janestreet.com/

Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:

Deanv Crouch
Brandon Bisel
Claire Greenhalgh
Vojtěch Mělnický
Gary Martin
Nelson Emerson

Support my channel and I can make more maths videos:
  / standupmaths  

Filming by Matt Parker and Geoff Marshall
Editing by Michelle Martin
Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
Maths book: http://wwwh.umble-pi.com
Nerdy maths toys: http://mathsgear.co.uk/

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