Blog.CarlRobitaille.org

Indiscriminate laziness

In 1659, Johann Heinrich Rahn published Teutsche Algebra. This was the first time the division symbol ÷ appeared in print

Posted on 2020/11/08 by Carl Robitaille

In 1659, Johann Heinrich Rahn published Teutsche Algebra. This was the first time the division symbol ÷ appeared in print. pic.twitter.com/v9THKjc5LK
— Fermat's Library (@fermatslibrary) November 6, 2020

Fibonacci Factorial & the Most Unknown Mathematical Constant

Posted on 2020/11/08 by Carl Robitaille

“Multiplication and Concatonation” aka Vampire Matrices

Posted on 2020/11/05 by Carl Robitaille

A very thorough investigation into "Multiplication and Concatonation" aka Vampire Matrices by Armin Hinterreither. Check out the whole paper here: https://t.co/WuO7nfHpJi pic.twitter.com/g4ZIOniJJu
— Matt Parker (@standupmaths) November 5, 2020

Paul Erdös on senility

Posted on 2020/11/05 by Carl Robitaille

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
— Fermat's Library (@fermatslibrary) November 5, 2020

Sondages téléphoniques automatisés versus Web

Posted on 2020/11/05 by Carl Robitaille

Les sondages téléphoniques automatisés s'en tirent très bien (Trump à 49%); certains sondages téléphoniques classiques aussi (47-48%); et quelques sondages Web. C'est de ce côté qu'il y a plus de recherche à faire. Échantillons? Modèle de prédiction de la participation? https://t.co/U3WLs9oumM
— Claire Durand (@clairedurand) November 4, 2020

Trivial $$$

Posted on 2020/11/05 by Carl Robitaille

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
— Tamás Görbe (@TamasGorbe) November 4, 2020

The Kronecker and Dirac deltas are basically the same thing in different settings

Posted on 2020/11/05 by Carl Robitaille

The Kronecker and Dirac deltas are basically the same thing in different settings. Did anyone teach you this? Or did you figure this out yourself? pic.twitter.com/Y1hezOEQJz
— Tamás Görbe (@TamasGorbe) November 4, 2020