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A Fractal View of the World

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Title: A Fractal View of the World


1
A Fractal View of the World
  • J. C. Sprott
  • Department of Physics
  • University of Wisconsin - Madison
  • Presented to the
  • CHAOS AND COMPLEX SYSTEMS SEMINAR
  • in Madison, Wisconsin
  • on February 17, 2009

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Fractals
  • Geometrical objects generally with non-integer
    dimension
  • Self-similarity (contains infinite copies of
    itself)
  • Structure on all scales (detail persists when
    zoomed arbitrarily)

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Cantor Set
D log 2 / log 3 0.6309
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Cantor Curtains
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Fractal Curves
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Weisstrass Function
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Fractal Trees
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Lindenmayer Systems
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Fractal Gaskets
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Natural Fractals
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Fractal Dimension
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Power Laws (Zipf)
Size of Power Outages
Words in English Text
Earthquake Magnitudes
Internet Document Accesses
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Other Examples of Power Laws
  • Populations of cities
  • Size of moon craters
  • Size of solar flares
  • Size of computer files
  • Casualties in wars
  • Occurrence of personal names
  • Number of papers scientists write
  • Number of citation received
  • Sales of books, music,
  • Individual wealth, personal income
  • Many others

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Stretching and Folding
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Strange Attractors
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Strange Attractor Icon
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Iterated Function System
Heads Tails
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Iterated Function System Icon
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Generalized Julia Set
1
Criterion after at least 100 iterations but
less than 1000 iterations for x0 y0 0
y0
-1
-1 x0
1
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Human Evaluations
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Aesthetic Evaluation
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References
  • http//sprott.physics.wisc.edu/
    lectures/fractals.ppt (this talk)
  • http//sprott.physics.wisc.edu/ fractals.htm (my
    fractal gallery)
  • http//sprott.physics.wisc.edu/chaostsa/ (my
    chaos textbook)
  • sprott_at_physics.wisc.edu (email me)
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