Cubic equation by Ciro Santilli 37 Updated +Created
Monty Python and the Holy Grail by Ciro Santilli 37 Updated +Created
Video 1.
The Holy Hand Grenade of Antioch scene from Monty Python and the Holy Grail
. Source. When a young Ciro Santilli played Worms Armageddon, he almost shat himself of laughter when he first threw a Holy Grenade. Little did he know it was actually a Monty Python reference.
Video 2.
Black Knight scene from Monty Python and the Holy Grail
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Video 3.
The Insulting Frenchman scene from Monty Python and the Holy Grail
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Video 4.
Execution in Russia by Monty Python
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Video 5.
Ministry of Silly Walks
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Digital micromirror device by Ciro Santilli 37 Updated +Created
Video 1.
The Insane Engineering of DLP by Zack Freedman (2022)
Source.
Pharmacy by Ciro Santilli 37 Updated +Created
Newspaper by Ciro Santilli 37 Updated +Created
Continuum mechanics by Ciro Santilli 37 Updated +Created
Point particle by Ciro Santilli 37 Updated +Created
This idealization does not seems to be possible at all in the context of Maxwell's equations with pointlike particles.
Matrix operation by Ciro Santilli 37 Updated +Created
BookofProofs by Ciro Santilli 37 Updated +Created
PlanetMath by Ciro Santilli 37 Updated +Created
Joe Corneli, of of the contributors, mentions this in a cool-sounding "Peeragogy" context at metameso.org/~joe/:
I earned my doctorate at The Open University in Milton Keynes, with a thesis focused on peer produced support for peer learning in the mathematics domain. The main case study was planetmath.org; the ideas also informed the development of “Peeragogy”.
Atlas (topology) by Ciro Santilli 37 Updated +Created
Collection of coordinate charts.
The key element in the definition of a manifold.
Supernatural martial arts by Ciro Santilli 37 Updated +Created
Shame that the Chinese in the lat 20th early 21st like that bullshit so much. It just weakens everything. Just imaginge those works with more realistic fighting! Would be amazing.
Coursera by Ciro Santilli 37 Updated +Created
Some courses at least allow you to see material for free, e.g.: www.coursera.org/learn/quantum-optics-single-photon/lecture/UYjLu/1-1-canonical-quantization. Lots of video focus as usual for MOOCs.
It is extremely hard to find the course materials without enrolling, even if enrolling for free! By trying to make money, they make their website shit.
The comment section does have a lot of activity: www.coursera.org/learn/statistical-mechanics/discussions/weeks/2! Nice. And works like a proper issue tracker. But it is also very hidden.
OpenStax by Ciro Santilli 37 Updated +Created
These people have good intentions.
The problem is that they don't manage to go critical because there's to way for students to create content, everything is manually curated.
You can't even publicly comment on the textbooks. Or at least Ciro Santilli hasn't found a way to do so. There is just a "submit suggestion" box.
This massive lost opportunity is even shown graphically at: cnx.org/about (archive) where there is a clear separation between:
  • "authors", who can create content
  • "students", who can consume content
Maybe this wasn't the case in their legacy website, legacy.cnx.org/content?legacy=true, but not sure, and they are retiring that now.
Thus, OurBigBook.com. License: CC BY! So we could re-use their stuff!
TODO what are the books written in?
Video 1.
Richard Baraniuk on open-source learning by TED (2006)
Source.
Linear form by Ciro Santilli 37 Updated +Created
The set of all linear forms over a vector space forms another vector space called the dual space.
Death by Ciro Santilli 37 Updated +Created
Representation theory by Ciro Santilli 37 Updated +Created
Basically, a "representation" means associating each group element as an invertible matrices, i.e. a matrix in (possibly some subset of) , that has the same properties as the group.
Or in other words, associating to the more abstract notion of a group more concrete objects with which we are familiar (e.g. a matrix).
Each such matrix then represents one specific element of the group.
This is basically what everyone does (or should do!) when starting to study Lie groups: we start looking at matrix Lie groups, which are very concrete.
Or more precisely, mapping each group element to a linear map over some vector field (which can be represented by a matrix infinite dimension), in a way that respects the group operations:
As shown at Physics from Symmetry by Jakob Schwichtenberg (2015)
Bibliography:

There are unlisted articles, also show them or only show them.