Chaim Goodman-Strauss

Math art fun

[Chaim Goodman-Strauss @mathbun1]

Lore and links of the Math Factor podcast and radio segment (2004-2012), up at https://t.co/PNEwoykIYE

[Chaim Goodman-Strauss @mathbun1]

Try your hand at identifying some symmetry types at https://t.co/PNEwoykIYE What types are these?

[Chaim Goodman-Strauss @mathbun1]

put some groovy images up at https://t.co/PNEwoykIYE

[Chaim Goodman-Strauss @mathbun1]

@CardColm If I'm not mistaken (and I might well be, this is *X in the orbifold notation: lining up everything that's the same, you'd have a great thickened up Möbius band, if you could actually manage it!

[Chaim Goodman-Strauss @mathbun1]

@CardColm The symmetry is 2222 in the orbifold notation.

[Chaim Goodman-Strauss @mathbun1]

Finally have a website up to enjoy, https://t.co/PNEwoykIYE with new posts daily. Please check it out!

[Chaim Goodman-Strauss @mathbun1]

Within an icosascope:

[Chaim Goodman-Strauss @mathbun1]

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?

[Chaim Goodman-Strauss @mathbun1]

Another Tooti Tooti video up! Make your own symmetrical designs from a plain envelope.
https://t.co/LBoBu3gBUX

[Chaim Goodman-Strauss @mathbun1]

Paper Scissors Tape

https://t.co/4BwkIYbMAB

launches with a quick guide to Tooti Tooti, the 2021 Rosenthal Prize winner. Lots more to come!

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

A detail #mathbun

[Chaim Goodman-Strauss @mathbun1]

This one takes quite a bit of explanation #mathbun

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

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

[Chaim Goodman-Strauss @mathbun1]

Two compounds -- uncolored they are very strange #mathbun

[Chaim Goodman-Strauss @mathbun1]

Two compounds -- uncolored they are very strange #mathbun