Received May 10, 2020; Accepted May 11, 2020

A half century after the discovery of the Lorenz
attractor, people are still finding and publishing new chaotic
systems with special properties. Surely we are nearing the time
when additional examples are unnecessary... or maybe not.

Ref: J. C. Sprott, Chaos Theory and Applications **2**(2),
1-3 (2020)

The complete paper is available in
PDF format.

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Cross section of the strange attractor for Eq.
(1) in the *z* = 0 plane. The attractor fills the whole of
space, and the colors indicate the value of the local largest
Lyapunov exponent with red positive and blue negative.