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On the cover: VisualPDE.com
Ben Walker, Adam Townsend & Andrew Krause invite you to play with their fun online PDE visualiserDear Dirichlet, Issue 12
Books, business and barns are the topics readers have sent in to the professor's postbox this issueThe scutoid: a geometric building block of life
In 2018, scientists discovered a new shape that is essential to multicellular lifeWhen Truchet met Chladni
Stephen Muirhead meets neither, as he explores waves, tiles and percolation theoryAdvent Calendar: 24 December
It's the last day of the Chalkdust advent calendar, so there must be something very good behind today's door...Page 3 model: Hallucinations
The geometry of psychedelic hallucinations