Our pet rabbit sitting up and folding over like a rag doll, as in that second picture, is some idiosyncratic thing she's figured out as a way to groom her feet and tail. We've never seen another rabbit do that and we have no idea how she figured how to do it.

Last year I did an A-to-Z glossary, writing one essay for each letter of the alphabet. I'm starting another one of them, and am looking for topic suggestions.

Here's a link for the letter A, and a list of the essays that I've written for 'A' in past years.

Thanks for any thoughts you have.

Reading Glen van Brummelen's _Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry_:

"We begin with the theorem that is named after Menelaus today, a statement from plane geometry that we shall extend to the sphere [ ... ] Curiously, Menelaus himself does not prove the planar statement, so he must have thought his readers already knew it."

I know Stigler's Law of Eponymy but this is getting ridiculous.

Just wanted to mention one of my all-time favorite The Far Side strips is among today's reprints.

And now the end of my 2019 A to Z, and my fitful self-introduction to Mathstodon: Zeno's Paradoxes. I only get about halfway through them. This may be a joke, but it's not one I made deliberately.

https://nebusresearch.wordpress.com/2019/11/28/my-2019-mathematics-a-to-z-zenos-paradoxes/

The suggestion I had for the letter Y was a game. It's one that I like, without having ever played. I just like the theory of it.

https://nebusresearch.wordpress.com/2019/11/26/my-2019-mathematics-a-to-z-the-game-of-y/

For the letter 'X', an A-to-Z has to take a loose interpretation of things. For example, by going to Greek: the Chi-Squared test.

https://nebusresearch.wordpress.com/2019/11/21/my-2019-mathematics-a-to-z-chi-squared-test/

I was asked to say something about Wallis Products. This let me discover just how the heck Wallis could have discovered such a thing. So here goes:

https://nebusresearch.wordpress.com/2019/11/19/my-2019-mathematics-a-to-z-wallis-products/

The letter V let me get into some of my peculiar favorite things: obscure trigonometric functions and numerical convenience. Here's some words about the Versine.

https://nebusresearch.wordpress.com/2019/11/14/my-2019-mathematics-a-to-z-versine/

For the letter U, the most interesting suggestion was for Unitizing. It's one of those things I had not consciously noticed was a thing, which made for an interesting essay challenge.

https://nebusresearch.wordpress.com/2019/11/12/my-2019-mathematics-a-to-z-unitizing/

For the letter T, I was asked to say something about Taylor Series. This fits well with my desire to insist that everything in mathematics is polynomials.

https://nebusresearch.wordpress.com/2019/11/07/my-2019-mathematics-a-to-z-taylor-series/

And there was another birdsite request for the letter S. From my A-to-Z for this year: sample space.

https://nebusresearch.wordpress.com/2019/11/05/my-2019-mathematics-a-to-z-sample-space/

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I read comic strips and write about the mathematics in them. He/him

Joined Jan 2019