Andrew Seaby
Is there a term for the shape shown above: a smooth continuous curve with three axes of symmetry? And if anyone could share the equation for this curve, I would be very grateful.
Andrew Seaby,
Stroud, Gloucestershire, UK
Shutterstock/Alberto Andrei Rosu
What happens to our electronic cloud records when we die?
Tony Spiess,
Taunton, Somerset, UK
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