Latest from the Blog

A Quilt to Celebrate a Monotile

An Aperiodic Monotile was published this week (details are here). To celebrate, I made a quilt with my mom with some occasional kitty input. I put together a quick slideshow of the process (not super detailed, but it will give you the gist of it). Preview of it is below:

An Improbability of Crested Puffins

A collective noun for puffins is an improbability! I live in Oregon with these beautiful Tufted Puffins (also known as crested). It’s pretty probable that improbable things will happen – just look at the perfection of these little birds.

Hyperbolic Ducky

Got a bug in your code? Is there a proof giving you grief? Did you have a bad day? In the midst of a decision? Why not talk with a ducky? I have a hypothesis that these hyperbolic duckies are the best listeners. Creating these ducks isn’t exact, and the instructions reflect that. I don’t…

pdf – of time and cosmos

Here is a PDF of the Mathober Series – of time and cosmos So, I printed a book for Mathober2022, but it is insanely expensive. If you’d like to flip through this work of art, here is a pdf.

Mathober 2022 Code Doodles

This post is late, but here is the code doodles from mathober2022: Click to change the code below. Or go here for the full page version. See the Pen Mathober2022 by Sophia (@fractalkitty) on CodePen.

Mathober2022 – Sketches

This is the collection of 31 pairings for #mathober2022. Day1 – Spindle Day2 – Cubic Day3 – Planar Day4 – Dissection Day5 – Flat Day6 – Hyperbolic Day7 – Harmonic Day8 – Error Day9 – Identity Day10 – Similar Day11 – Fundamental Day12 – Category Day13 – Theory Day14 – Paradox Day15 – Tiling Day16…

White-Breasted Nuthatch

These birds are often called “upside-down birds,” but maybe they just have no regard for orientation. I enjoyed playing with Boy’s surfaces, Möbius strips, cross-caps, and various Klein bottles for this piece (thanks math Twitter for responding to non-orientable surface requests). I decided on a figure-eight immersion of a Klein bottle.

Mathober 2022 – Prompts!

Get ready for the third annual Mathober! This all started to nurture the practice of daily doodles with no rules/strings attached. This activity has been fun for the last couple of years and I hope to see the community grow. Feel free to join in at any time to create a daily sketch/doodle/script based on…


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