# Revision history [back]

### Product of elements in a set

I have a set of numbers, and I would like to find the product of them. Generally speaking, the set of the numbers could be quite large, and will be complex, so I don't want to have to manually multiply them all. The example I have below only has 3 integer elements though..

v=[1,2,3]
S=Set(v)
S
c=S.cardinality()
c


My original thinking was something along the lines of:

 P = prod(s[i] for i in range(1,c))
P


But I'm not sure how to: 1) define s[i] appropriately 2) if this will work

I assume at some point I need to define I'm working in a complex field, but again, I'm not sure where I would need to do that?

### Product of elements in a set

I have a set of numbers, and I would like to find the product of them. Generally speaking, the set of the numbers could be quite large, and will be complex, so I don't want to have to manually multiply them all. The example I have below only has 3 integer elements though..

v=[1,2,3]
S=Set(v)
S
c=S.cardinality()
c


My original thinking was something along the lines of:

 P = prod(s[i] for i in range(1,c))
P


But I'm not sure how to: 1) define s[i] appropriately appropriately or 2) if this will work

I assume at some point I need to define I'm working in a complex field, but again, I'm not sure where I would need to do that?