PolyPongoPi

@elonmusk Musk just so you know I hate you

✨look up at the stars ✨

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

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

For anyone curious about nonlinear dynamics and chaos, including students taking a first course in the subject: My lectures are freely available here. m.youtube.com/playlist?list=…

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 linear.axler.net. That website also has links to pre-order the print version of the book. #linearalgebra