Del
In
vector calculus,
del is a vector differential
operator represented by the symbol . Another name of this symbol is the
nabla, after a Hebrew stringed instrument with a similar shape, and so the operator is also called the
nabla operator. Yet another name is
Atled, because it is a reversed
Delta.
It is a shorthand for the vector:
The symbol was introduced by William Rowan Hamilton.
The operator can be applied to scalar fields () or vector fields (), to give:
See also:
Further reading
- Div, Grad, Curl, and All That, H. M. Schey, ISBN 0-393-96997-5