## Regular

I’m having a blasty-bast with Group Explorer today. How have I never played with this before!?

https://sourceforge.net/projects/groupexplorer/?source=typ_redirect

## shadowpeoplearejerks: illustrationinphysics: …

Complex analysis – the perfect subject for combining visual and analytic thinking. I just read “Visual Complex Analysis” by Tristan Needham, a basic book on complex analysis: lots of historical references, uncompromising explanations, lots of problem solving and plenty of beautiful illustrations!

I have this book. It is very good.

## curiosamathematica:

Math Love by CuteReaper.

## I can’t be the only one. Right?

I can’t be the only one. Right?

## szimmetria-airtemmizs: szimmetria-airtemmizs: This one is based…

This one is based on the hirschhorn tiling.

This is still one of my favorite tilings. In the center you can see a regular 18-gon that is divided into 18 pentagons. The shape of the pentagons are the same, only the color changes.

## the-maths-blog:Had this video suggested to me…

Had this video suggested to me by http://pebblinator.tumblr.com/ and it is really cool if you’re like me and have no previous understanding of 4D!

## szimmetria-airtemmizs: The sea.  Each color is a sine function….

The sea.

Each color is a sine function. The height is constant because sin(t+0*2*pi/5

)+

sin(t+1*2*pi/5)+sin(t+2*2*pi/5)+sin(t+3*2*pi/5)+sin(t+4*2*pi/5)=0 for all t value.

In a column the i-th segment have length

sin(t+i*2*pi/5)+1, so the height is always 5.