∑

sigma a greek letter often used in math as representation of summary operation

how would you write sum from 1 to 1000, without typing 1000 numbers?
I would use sigma ∑ notation tex\sum_{1}^{1000} i/tex

by seledrim May 15, 2016

∑

The letter Sigma is ∑.

He's so ∑!

by RT∑:) May 10, 2025