science

[paula0803]

In equations involving velocity, the triangle symbol means

[jake-the-peg]

Do you mean grad

http://www.appliedmathematics.info/veccalc.htm

as in vector calculus?

[fo3nix]

I think you mean delta, which would mean change in velocity.

http://suberic.net/~dmm/graphics/logo/DmmLogoD .png

[Clanad]

Is it not the Greek symbol delta, meaning increment? It's used as a nonzero change in the value of a quantity in calculus...

[Clanad]

Oops! Apologies, fo3nix...

[mibn2cweus]

Close, Clanad, but no cigar! ; )