Ciro Santilli @cirosantilli 35

Inferior compared to self-directed learning, but better than the traditional "everyone gets the same" approach.

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 $D=2$, both happen to coincide, a boring example of an exceptional isomorphism.

Same as recursive language but in the context of the integers.