My second A-to-Z topic for the year was the Butterfly Effect. Of course I slipped some comic strips into it.

nebusresearch.wordpress.com/20

My third A-to-Z topic was Complex Numbers. I've written about them before, so tried to think a bit about a different angle: why do we trust them?

nebusresearch.wordpress.com/20

The fourth of my A-to-Z topics was Delta. It's a big idea so I tried to trim it to two specific but not quite identical uses of the concept.

nebusresearch.wordpress.com/20

For my fifth A-to-Z topic, I got the suggestion of Exponential. I used the chance to work out a reason behind something we've gotten used to: why is the exponential of an imaginary number on the unit circle?

nebusresearch.wordpress.com/20

The sixth of my A-to-Z topics was Fibonacci. One of my readers hoped to learn a bit about Leonardo of Pisa's biography. This brought me to some amazing discoveries about Fibonacci's biography, and I share it here ...

nebusresearch.wordpress.com/20

For the eighth of this year's A-to-Z essays I wrote about Hilbert's Problems, and about a question adjacent to David Hilbert's famous list.

nebusresearch.wordpress.com/20

The ninth of my A-to-Z topics this year was Imaginary Numbers. Yes, I found the Peanuts strip where Sally Brown imagines "overly-eight".

nebusresearch.wordpress.com/20

Also the one where that plush tiger has some suggestions.

The tenth of the A-to-Z this year? Jacobi polynomials. I was thinking to just get every function ever covered in one article.

nebusresearch.wordpress.com/20

Can I explain K-Theory in two thousand words? No, no I can not. But in the eleventh of my A-to-Z essays for the year I at least try to say why it's worth trying.

nebusresearch.wordpress.com/20

My wife hoped that for the letter L I would explain "Leibniz, the Inventor of Calculus". I could not in good conscience say 'the', but I could say other things too.

nebusresearch.wordpress.com/20

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@nebusj Leibniz, the inventor of the binary numeral system?

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