• Alias: sum. • Compound operator with built-in evaluation rules. • is by default interpreted as Sum[f,i,imax]. • is by default interpreted as Sum[f,i,imin,imax]. • Not the same as the Greek letter \[CapitalSigma]. • See also: \[Product] , \[Integral] .
\[Sum]
sum
is by default interpreted as Sum[f, 
i, imax
]. 
is by default interpreted as Sum[f, 
i, imin, imax
]. 