January 3, 2018
Replied to a post on twitter.com :
@BarbaraFantechi I never thought I'd see such high level math make it so beautifully into Instagram either https://www.instagram.com/p/Bdd8vmfBQvG/
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I have seen very beautiful such things in the past, but admittedly not on Instagram :).
Barbara Fantechi, Jan 03 2018 on twitter.com