Not just 2d, nd, three, four, five, whatever dimensions, a bit agnostic in this, as is algebra. I can't claim to have dabbled in the language but was somewhat

Not just 2d, nd, three, four, five, whatever dimensions, a bit agnostic in this, as is algebra. I can't claim to have dabbled in the language but was somewhat aware in the 80s and 90s. An APL magazine from the 90s was called Vector if I recall correctly. Yes quite mathematical, and an interesting community then of some quite smart melding of math heads, still a huge focus on performance, played with it on a VAX.