1. In control theory, a system is _____ if any of the roots of its characteristic equation has real part greater than zero.
(a) Changing.
(b) Stable.
(c) Unstable.
(d) Unchanging.

2. What refers to the spread of momentum between particles of matter, usually in the liquid state?
(a) Chaos theory.
(b) Momentum diffusion.
(c) Turbulent flow.
(d) Theoretical physics.

3. Where was Benoit Mandelbrot born?
(a) Warsaw, Poland.
(b) Milan, Italy.
(c) Lisbon, Portugal.
(d) Reykjavík, Iceland.

4. What book did Michael Barnsley publish in 1988?
(a) The Structure of Scientific Revolutions.
(b) Fractals Everywhere.
(c) Deterministic Nonperiodic Flow.
(d) Physical Review Letters.

5. Who is attributed with the following quote from Chapter 8, "Images of Chaos": "What else, when chaos draws all forced inward to shape a single leaf"?
(a) Albert Libchaber.
(b) Michael Barnsley.
(c) Conrad Aiken.
(d) Benoit Mandelbrot.

Short Answer Questions

1. Who is attributed with the following quote in Chapter 5, "Strange Attractors": "Big whorls have little whorls which feed on their velocity, and little whorls have lesser whorls and so on to viscosity"?

2. What is a concept in mathematics where a fixed rule describes the time dependence of a point in a geometrical space?

3. When was James Yorke born?

4. Where was James Yorke born?

5. When was Michael Barnsley's book SuperFractals published?

(see the answer key)

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