A very thorough investigation into "Multiplication and Concatonation" aka Vampire Matrices by Armin Hinterreither. Check out the whole paper here: https://t.co/WuO7nfHpJipic.twitter.com/g4ZIOniJJu
Erdös published more than 1,500 papers and did mathematics 19 hours a day, even at 83 – "The 1st sign of senility is when a man forgets his theorems. The 2ns sign is when he forgets to zip up. The 3rd sign is when he forgets to zip down" pic.twitter.com/gsG231pINM
If I got a penny every time a professor told me something is 'trivial' and it actually required several pages of rigorous working out or was literally false, I would be rich af