Ciro Santilli @cirosantilli 37

And when it can't, attempt to classify which subset of the integers can be reached. E.g. Legendre's three-square theorem.

The elliptic curve group of an elliptic curve is a group in which the elements of the group are points on an elliptic curve.

The group operation is called elliptic curve point addition.

Bibliography:

This is the most extreme and final form of peer tutoring, it's natural final consequence given the Internet Age.

Preprint: arxiv.org/abs/2303.10798

Ciro Santilli distinctly remembers being taught that at basic electrical engineering school during Ciro Santilli's undergrad studies at the University of São Paulo.

It really allows you to do alternating current calculations much as you'd do DC calculations with resistors, quite poweful. It must have been all the rage in the 1950s.

andor.oxinst.com/learning/view/article/measuring-resistance-of-a-superconducting-sample-with-a-dry-cryostat Not a video, but well done, by Oxford Instruments.