22 Aug '05 07:24

I recently learned that:

Pi/4 = 1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11...&c &c

This seems unbelievably fascinating to me. First, because pi which is utterally

irrational would have such a seemingly elegant mathematical defintion, and

second that this was discovered at all.

Does any mathematician want to talk about this defintion, how it came about,

how it is applied?

Nemesio

Pi/4 = 1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11...&c &c

This seems unbelievably fascinating to me. First, because pi which is utterally

irrational would have such a seemingly elegant mathematical defintion, and

second that this was discovered at all.

Does any mathematician want to talk about this defintion, how it came about,

how it is applied?

Nemesio