4
votes
4answers
273 views

What can I call the two possible directions on a line (as a category)?

In English, a vector is said to have two properties: a length and a direction. The possible directions correspond to half-lines out of the origin (so that, eg, up and down are different directions). ...
6
votes
2answers
447 views

Etymology of “regression”

What is the etymology of "regression" as in finding the coefficients of polynomials?
3
votes
4answers
273 views

Use of the word “convergent”

This question is for people who know some mathematics. Is it correct to say The sequence is convergent to 0. Normally we say: The sequence converges to 0.