PolyPongoPi

[PolyPongoPi @polypongo]

@elonmusk Musk just so you know I hate you

[Historic Vids @historyinmemes]

Weapon engineers Stoner and Kalashnikov pose with each other's rifles, USA, 1990.

[Historic Vids @historyinmemes]

Native American land loss in the United States of America from 1776-1930

[Steven Strogatz @stevenstrogatz]

For anyone curious about nonlinear dynamics and chaos, including students taking a first course in the subject: My lectures are freely available here. https://t.co/y5n3S9nXCx

[Sheldon Axler @AxlerLinear]

I am delighted to announce publication of the 4th edition of Linear Algebra Done Right as an Open Access book. The electronic version is legally free to the world at https://t.co/ii1ovMFKvH.
That website also has links to pre-order the print version of the book.
#linearalgebra