Happy #ShamelessPlug Day (cont'd)!

While I'm at it ...

I also have a downloadable poster of the Seven Single-Fold Operations of #Origami (popularly, but improperly, known as "Axioms").

The attractive ---even friendly!--- design features clear descriptions unencumbered with unnecessary mathematical notation.

Also, unlike with many compilations of the statements, this one lets you know up-front when a given operation can be performed by multiple folds ... or none at all! (Also-also, I'm introducing labels for the operations ---eg, "PP Qq" for "a point folds onto itself, and another point folds onto a line"--- because I can't keep the various numbering/lettering schemes straight in my head.)

https://inspiredbymath.etsy.com

Happy #ShamelessPlug Day!

#TauDay (6.28) preppers and #PiDay (3.14) laggards, my InspiredByMath shop on Etsy has t-shirt designs featuring both Tau and Pi.

Remember: There's room enough on the numberline for both constants, so let's stop with the belligerence already!

https://inspiredbymath.etsy.com

We also touched on my #scifi adaptation of the #odyssey, which you can follow on KS right now. See thread for link:
https://www.youtube.com/watch?v=fCEGDXvE_Oc

#indiecomics #booksky #comicsky #preview #shamelessplug #prelaunch #kickstarter
https://www.youtube.com/watch?v=fCEGDXvE_Oc

Happy #ShamelessPlug Day!

Finding myself in need of #PiDay apparel ("ap-π-rel"?) for an event or two, I've added a couple of pi-related t-shirt designs to my Etsy shop: http://inspiredbymath.etsy.com

• "Approximately Pi" demonstrates the near-equality of π and √2+√3 (that is, 3.1415… vs 1.4142…+1.7320…=3.1462…). Note that √2 and √3 appear courtesy of our old friends the 45°-45°-90° and 30°-60°-90° triangles.

• "Powers-of-Pi Pinwheel" features a sequence of iterated involutes of a unit semicircle, each with length π^n/n! . It's the special case (t=π) of Y. S. Chaikovsky's delightful visualization of the power series for sin(t) and cos(t). (Fun Fact: Long ago, I adapted Chaikovsky's construction to tan(t) and sec(t), but cot(t) and csc(t) still remain elusive. https://trigonography.com/?p=881 )

These join two pi-and-tau designs.

Mathy 2026! #MathyDay

(It's not an "i", it's an upside-down "!" for "inverse factorial"!)

#ShamelessPlug: T-shirt (listing lots of mathy days throughout the year) available at my Etsy shop: https://inspiredbymath.etsy.com

12.13.25: Happy Plus-Equals Day! #MathyDay

I'll take the opportunity to slip-in another #ShamelessPlug for my Mathy 2026 t-shirt, available at my Etsy shop: https://inspiredbymath.etsy.com