If I may speak up for my own writing here, I've begun my mathematics blog's annual glossary project. In line with my very worn, battered spirits, it's a smaller one than usual. To start the Little 2021 Mathematics A-to-Z, the letter ... M, for Multiplication.

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My second essay for the Little 2021 Mathematics A-to-Z was a companion to multiplication ... A, for Addition.

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My third essay for the Little 2021 Mathematics A-to-Z went to the Torus, and as you'd expect, board game design.

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And my Little 2021 Mathematics A-to-Z continues through the word, with H for Hyperbola.

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I've let myself fall behind on my writing again. For the next letter in the Mathematics A-to-Z, 'E', I wrote about Embedding:

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And for the second letter 'M' in my Little Mathematics A-to-Z, here's 'Monte Carlo':

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For the second 'A' in the Mathematics A-to-Z this year, I try to explain Analysis in 1500 words. There's details omitted.

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Last week's essay, the second 'T' in Mathematics A-to-Z, was about the Triangle:

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For the letter 'I' in my Mathematics A-to-Z, it's the Inverse:

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And I'm appealing for suggestions for the last couple topics seen as I hope not to miss deadline for the letter 'C' this week:

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@nebusj Have you ever plotted the modular hyperbolas $$xy \equiv 1 \pmod{m}$$ for various values of m? It's a whole bunch of new looking-glass worlds to dive into.

@jsiehler I had not and now I am intrigued!

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