## The Jacobian & Divergence

On the last post, I gave a naive idea of where the Jacobian determinant comes from when changing variables: it was the volume of an approximate »

On the last post, I gave a naive idea of where the Jacobian determinant comes from when changing variables: it was the volume of an approximate »

Years ago I used the Jacobian determinant to find the area of an astroid and made a note about finding out where it came from. There »

Sorry for the long hold up on another post. This new post is a result on my investigations on a proof of \(\zeta(2) = \frac{\pi^ »

It is about time I revisited my first adventure Envelopes and Astroids. In the end of the post, I named the envelope of the line segments »

Envelopes kept cropping up in my doodles but I never gave them much attention. Up until the day I started drawing line segments of a constant »