The alt code for the summation symbol is 228, so you can type the symbol by holding down alt and typing 228 (using the number pad).
(You can also copy and paste it: Σ)
Chat with our AI personalities
It's not. It depends on the method you use for summation whether summation > integral or integral > summation.
That is the Greek letter Epsilon which indicates summation.
Sum or summation
A summation is a recap of all the highlights of a presentation.
Summation is the process of adding things together or a sum total of things added together. The term summation has a special meaning related to extrapolation of context.