A

David

Darling

Cayley's sextic

Cayley's sextic

Cayley's sextic is a sinusoidal spiral curve described by the Cartesian equation

 

4(x2 + y2 - ax)3 = 27a2(x2 + y2)2

 

It was discovered by Colin Maclaurin but was first studied in detail by Arthur Cayley and named after him by R. C. Archibald in 1900.