Looks like I may soon become more active here. Impetus: the impending shutdown of Google+. I may at least start mirroring what I post there to here and see how well that goes. For more discussion on alternative social media platforms see my G+ post,

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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.