We have a small Youtube channel where we explore niche topics in computer science. These two are the two most liked videos. https://www.youtube.com/watch?v=wL3uWO-KLUE https://www.youtube.com/watch?v=A60q6dcoCjw

The algorithmic trick that solves Rubik’s Cubes and breaks ciphers

What do the Rubik’s cube and a cipher from the 70s have in common? Let’s find out.Our Patreon: https://www.patreon.com/Polylog0:00 Rubik’s cube9:40 DES------…

Is it okay if we link to a video of someone else doing that? 3blue1brown has a really good video that gives a cool visual intuition for Bayes' theorem. https://www.youtube.com/watch?v=HZGCoVF3YvM

Bayes theorem, the geometry of changing beliefs

Perhaps the most important formula in probability.Help fund future projects: https://www.patreon.com/3blue1brownAn equally valuable form of support is to sim…

Just my tip how I used to draw parabola faster at school.

Instead of calculating ax^2 for each point, just remember, that differences between consequent point values grow as odd numbers.

0, 1, 4, 9, 16 are the heights of first point of standard parabola, differences are 1 3 5 7 between them.

And the difference between such points stays proportional no matter how you move the parabola ( y=a(x-b)^2+c). So instead of calculating ax^2 for each whole number x find the point corresponding to the 0 and 1 of classical parabola. Find the difference d. For each next point you draw make a unit step to the right and the oddnumber×d step vertically.

https://en.wikipedia.org/wiki/Cook%E2%80%93Levin_theorem

I think this is really cool and with this first NP complete problem we was able to derivative a lot of other NP complete problems.

I'll just withdraw some bounty since low activity, I might add more back if there's more interest