This I Know I Think
Life on the verge of understanding

## Another beautiful equation

October 16, 2018 Categories: Uncategorized. Tags: maths.

Here’s another example of a mathematical identity that is almost magical: $$\frac {\pi} {4} = 1 – \frac{1}{3} + \frac{1}{5} – \frac{1}{7} +…$$ The beauty lies in the apparent simplicity of this, along with the fundamental question of why the interminable expression on the right results in increasingly better approximations to $\pi$.

## Thoughts on friendship

February 21, 2016 Categories: Uncategorized.

The always interesting Brain Pickings Weekly carries this quote from a note by V. V. Rozanov to a letter of Strakhov, on the subject of friendship: