Math notation is often 2-dimensional and nested. People often don't just write ∑, they write ∑ and then write stuff above and below that ∑ in smaller letters. T

Math notation is often 2-dimensional and nested. People often don't just write ∑, they write ∑ and then write stuff above and below that ∑ in smaller letters. The they will nest statements with that statement and so on. Something like this statement below (admittedly random 'gibberish') is almost impossible to read (or write) when written out linearly, but would quite easy to visually write and parse if written out in standard math notation. sum(div(integ(0,inf(),pow(n,-x*pi()),x),sum(p,n,q),0,n))