What is a Vampire Matrix?


From Standup Mathematician.

Apply for a paid internship at Jane Street! Or, a job.

Vampire Numbers on Numberphile with James Grime.

Flammable Math’s original tweet:

Robin Houston gets involved:

Here comes Greg Egan!

Robin’s tweets about characteristic polynomials and the Cayley-Hamilton theorem. I suggested looking them up and working through the logic yourself. It’s straight-forward enough and good fun.

Robin’s code for finding 2 × 2 examples:

Robin’s 3 × 3 monsters. If you can beat them: let us know!

My previous video about log(1+2+3)

Behold the pi matrix which squares to give more pi!

– At 07:20 I say 81 when I mean 82. The on-screen number is correct.
– I accidentally say "log troll" instead of "division troll" at 03:38.
– At 03:45 I cross out the wrong 7. Whoops. Gives 117 instead of 171. First spotted by Ryan Parker (no relation).
– I think that’s all. Let me know if you spot any more mistakes.

As always: thanks to Jane Street who support my channel. They’re amazing.

And thanks to all my Patreon legends. Your support paid for that cape. Let me know if you have any other video ideas I can use it for.

Spoooky wardrobe, make-up, filming and editing by Alex Genn-Bash
Spoooky maths animations by Matt Parker
Extra-spoooky music by Howard Carter
Largely non-spooky design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
US book: https://www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/
UK book: https://mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: http://mathsgear.co.uk/

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