Topology of a Twisted Torus - Numberphile

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NUMBERPHILE

Videos by Brady Haran

[Rckr]

"You can put MORE Cream cheese in this bagel!"

The excitement was palpable lol. As was my amusement.

I'm REALLY tempted to try this... even better would be to request a Noah's bagels to cut their bagels like this and then just explain to them matter-of-factly: "I'm a commuter, I need my bagels cut this way" and just show them the screencap of him holding the bagel-chain :P

[Laser_Ranger]

Frankly I'm impressed he was able to cut the bagel like that

[numberphile]

Thanks or all the great comments - animations were done by a chap named Pete McPartlan

[subjectt.change]

I used to hate maths before I started watching numberphile; now I'm working my way through Martin Gardner puzzles and studying high order logics! Thanks for giving me the kick I needed!

[davidjoffe-hunter]

"I'm Carlo Séquin and this a bagel"

[strengthman]

Ah, mathematicians. Figuring out the best ways to cut bagels.

[BearsThatCare]

"What's a Mobius Band you say? Well I'll show you."
*zzzziiip*

[cavalrycome]

I'm always impressed by the animations in your videos.

[IhsanMujdeci]

Just like a mobius strip this video started and ended with the same scene and words.

[GSPV]

Great person to have on Numberphile, obviously passionate about mathematics while maintaining a childlike wonder for the strange properties it produces, as well as being a funny guy to boot.  More with him, please.

[Jerd]

9:30 - You're having far too much fun with these animations, aren't you Brady?  :P

[LeirgaukThend]

I'm gonna build a mobius house, then my mum can't hassle me about spending too much time inside.

[davidcrawford]

thank god. I knew I wasn't getting maximum cream cheese on my bagels. XD

[KevinSmall]

your joke about the 'galactic concentrator' at the end just gave me a crazy idea lol

[vibraphonics]

I keep coming back to the video. I think it's the combination of Prof Sequin's calming voice and something satisfying about the 3D models

[kiprs]

I think this guy is my new favorite. He's a tremendous talker, he perfectly manages to maintain interest in himself and somehow not for one second bore you. Splendid choice, Brady.

[EddyProca]

I love that he actually had all the different objects instead of just talking about them in theory. Maybe this is something for Maths Gear?

[boyo]

I want to find someone who talks about me like Carlo Séquin talks about cream cheese

[AxeManAnthony]

08:48
Professor: A mobius band!
Brady: Ah! :D
Professor: What's a mobius band? Lets see!
Brady: Oh D:

[chrisg]

A bagel is made by joining the two ends of a tube of dough.

If you put two tubes alongside each other, twist them and join the end of one to the end of the other then you get one continuous piece of dough, the same result as Carlo gets when he cuts a bagel while rotating the knife only 180 degrees (at 7.36 in the vid).

If you do a double twist and join each tube to its own end rather than that of the other you get what Carlo gets earlier on (1:33) when he rotates the knife 360 degrees, the two tubes are separate pieces of dough but chain-linked.