Hyperplane Updated 2025-07-16
Generalization of a plane for any number of dimensions.
Kind of the opposite of a line: the line has dimension 1, and the plane has dimension D-1.
In , both happen to coincide, a boring example of an exceptional isomorphism.
Dollar Updated 2025-07-16
git clone Updated 2025-07-16
Age of Earth Updated 2025-07-16
Amen Updated 2025-07-16
Linear form Updated 2025-07-16
The set of all linear forms over a vector space forms another vector space called the dual space.
Punched card Updated 2025-07-16
Served as both input, output and storage system in the eary days!
Video 1.
1964 IBM 029 Keypunch Card Punching Demonstration by CuriousMarc (2014)
Source.
Video 2.
Using Punch Cards by Bubbles Whiting (2016)
Source. Interview at the The Centre for Computing History.
Video 3.
Once Upon A Punched Card by IBM (1964)
Source. Goes on and on a bit too long. But cool still.

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