Hello, friends! This month was short, but it hit me with everything it had, from a death in the family to a short-lived but acutely miserable stomach bug. March, please be a little gentler. In spite of the negatives, there were positives too. I took short trips to Ireland, Austria, and Malta. It was my first time in any of those countries, and I'd love to go back to all of them. A highlight from Dublin was a pilgrimage to Broom Bridge, which William Rowan Hamilton vandalized with quaternions in 1843. What I wrote:
How to Celebrate Fatou's Day Mathematician Pierre Fatou's birthday coincides with Fat Tuesday this year! You can celebrate the rare mathematical holiday of Fatou's Day by learning about a fractal I (and no one else) call Fatou's pancake.
When Things Go Missing My grandfather passed away this month. It is different to lose a grandparent than a parent. My grandfather had a full life, and I feel extraordinarily grateful to have had so much time with him as an adult. This meditation on loss by Kathryn Schulz is beautiful.
I was thrilled to learn about Chawne Kimber's quilts this month from the Women Arts blog. Kimber is a mathematician in addition to a talented quilter, and I'm now following her blog, Completely Cauchy.
Roman numerals are worse for doing arithmetic than Hindu-Arabic numerals...if you only use algorithms designed with Hindu-Arabic numerals in mind. Thony Christie discusses this myth and shares some different algorithms that could be better for Roman numerals. If you're going to compare them, you should give them both a fair shot!
February 19 was the 75th anniversary of the signing of Executive Order 9066, which cleared the way for Japanese internment in WWII. I was floored by Esri's compelling map- and data-driven story about that shameful chapter in our history.