Lore and links of the Math Factor podcast and radio segment (2004-2012), up at chaimgoodmanstrauss.com

Try your hand at identifying some symmetry types at chaimgoodmanstrauss.com What types are these?

put some groovy images up at chaimgoodmanstrauss.com

Finally have a website up to enjoy, chaimgoodmanstrauss.com with new posts daily. Please check it out!

Within an icosascope:

Ok, if you think about, you can see why the upright hand in the back is also a right hand— this is the “mirror paradox”, that you’re not reversed in a pair of mirrors meeting in a right angle. So why is the ipad backwards?

Another Tooti Tooti video up! Make your own symmetrical designs from a plain envelope. youtube.com/watch?v=5MihLMUj…

Paper Scissors Tape youtu.be/6lxOBbE6elE launches with a quick guide to Tooti Tooti, the 2021 Rosenthal Prize winner. Lots more to come!

L1 rolls up into L2, just as L3 rolls into ideal hypercubes, etc, limiting to the #lamplightergroup #mathbun #geometricgrouptheory

The lamplighter group as a limit of groups: L1 is drawn on ideal squares in H2. L2, shown here sits on ideal cubes in H3. Rolling these up by the next relator for L3 gives a graph on ideal hypercubes in H4, etc, Limiting to the #lamplightergroup #symmetry #mathbun

A detail #mathbun

This one takes quite a bit of explanation #mathbun

One of the quarter groups, 8^o, Intl # 198 #mathbun

One of the quarter groups, 8^o, Intl # 198 #mathbun

Had to hit more than one big box store for this Hilbert curve #mathbun #fractals

Had to hit more than one big box store for this Hilbert curve #mathbun #fractals

Two compounds -- uncolored they are very strange #mathbun

Two compounds -- uncolored they are very strange #mathbun

A 33yr old model of fractal octahedra stack limiting to a cube #mathbun #fractals