# Math notation

1. Mar 1, 2009

### RyozKidz

$$\nabla\prod$$
can anyone can explain this notation to me?

2. Mar 2, 2009

### CompuChip

That's just two symbols which don't make any sense like that.
Can you explain in which context you found them and/or maybe provide a copy of the relevant part of the document (like a scan or copying the sentence)?

3. Mar 2, 2009

### HallsofIvy

If it were $$\nabla\times$$, then it would be the "curl" operator.

4. Mar 2, 2009

### csprof2000

It's the gradient of the PI vector. lol.

5. Mar 2, 2009

### qntty

Last edited by a moderator: Apr 24, 2017