#nzpol. Sum of reciprocals of the positive integers - harmonic series is 1+1/2+1/3+1/4+1/5+1/6+ 1/7+... which diverges (extends to infinity)
The entire sum can be factorised (with an infinte no. of factors) as ..(1+1/2+1/4+1/8+..)(1+1/3+1/9+1/27+..)(1+1/5+1/25+1/125+..)(1+1/7+...
#nzpol