Some of my own favorites from this year's Bridges mathematical art gallery:
Fielding Brown's 3d Lissajous wood ribbon sculpture, http://gallery.bridgesmathart.org/exhibitions/2019-joint-mathematics-meetings/fieldingbrown
Diana Davis's periodic pentagonal billiards patterns,
Stephen Kenney's illustration of triangle geometry,
Elizabeth Paley's stoneware Klein bottle,
Anduriel Widmark's knotted glasswork
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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