Welcome to my blag

Just down the street little Jenny Nong created her blag (http://www.jennynong.blogspot.com) and I decided to try my hand at writing about what I cared about.

Then I realized that would be one empty blag.

So instead, I'm writing about the next best things: metal, math, and general brutality (brutality shall remain ambiguous so I can write about whatever the hell I want, and I'm gonna).

Just so you know, if you don't know me: Student in America. Hi. Let's get on with it.

What's brutal today? Depleting harmonic series. They were first studied before 1915 and theyre really cool. All terms with a 9 in the denominator/ in decimal representation are excluded from the series. So what happens?

∞

∑ (1/n)

n


Figure it out. Hint? DHS are shown to always converge to a certain value, or less than that value. What is the value? What does this series converge to?
Enjoy. I'll post the answer tomorrow. Theres a good xkcd today, too