PHYS 217 CHAOS

Syllabus: Phys 217 - Fall 2000

Monday, Oct. 16: (Course Organization/Introduction)

  • General Info, Home Page Features
  • Brief History of Chaos
  • Determinism versus Randomness
  • Deterministic Chaos
  • Symbolic Dynamics
  • Reading: Gleick, pp. 1-8; Hall, chapters 1, 14

Wednesday, Oct. 18: (Mappings)

  • The Idea of Feed-Back
  • An Experiment with Mathematics
  • The Logistic Mapping
  • First Encounter with Sensitivity and Chaos
  • The Butterfly Effect
  • Reading: Hall, chapters 3, 13; Gleick, pp. 11-31

Friday, Oct. 20: (Programming Techniques)

  • Problem Set 1 Due
  • Brief History of FORTRAN
  • Architecture of the Language
  • Types of Variables
  • Constructs: Assignments, Loops, Input, Output, Files
  • Example Program: Iteration of the Logistic Mapping
  • Reading: Hall, chapter 3

Monday, Oct. 23: (Fixed Points)

  • General Definition of N'th Order Fixed Points
  • Periodic Orbits

Wednesday, Oct. 25: (More on Fixed Points)

  • First and Second Order Fixed Points in Detail
  • Stability of Fixed Points

Friday, Oct. 27: (Logistic Mapping: Numerical Survey)

  • Problem Set 2 Due
  • Computer Experiments with the Logistic Mapping
  • Searching for Patterns
  • Numerical Discovery of Chaos
  • Reading: Gleick, pp. 35-56; Hall, chapter 7

Monday, Oct. 30: (Logistic Mapping: Bifurcation Structure)

  • Forward Tree for Positive Control Parameters
  • Backward Tree for Negative Control Parameters
  • Reading: Gleick, pp. 59-80; Hall, chapter 3

Wednesday, Nov. 1: (The Transition to Chaos)

  • Bifurcation Cascades
  • Feigenbaum Number
  • Estimate for Lambda Star
  • Reading: Gleick, pp. 157-187; Hall, chapter 3

Friday, Nov. 3: (Binary Shift Map)

  • Binary Numbers
  • Modulo Operation
  • Fixed Points, Cycles
  • Liapunov Exponent
  • Reading: Gleick, pp. 243-272

Monday, Nov. 6: (Orders of Infinity, Measure, Dimension)

  • Counting of the Rationals
  • Irrationals: Uncountable
  • Rationals and the Concept of a Dense Set
  • Measure
  • Paradox of Dimension

Wednesday, Nov. 8: (Review of Course Material for Midterm)

  • Chaos Demonstration
  • Devaney's Definition of Chaos

Friday, Nov. 10: (Midterm Exam)

  • Last Day to Withdraw from 2nd Quarter Classes

Monday, Nov. 13: (Fractals)

  • Tent Map
  • Cantor Set
  • Fractal Dimension
  • Reading: Gleick, pp. 83-118, 303-317; Hall, chapter 10

Wednesday, Nov. 15: (Chaos Demo and Fractal Dimension)

  • Demo of the Kicked Compass Needle
  • Introduction to 2D Mappings
  • Naturally Occurring Fractals
  • Fractal Dimension of a Fern Leaf
  • Embedding Dimension
  • Formula for Fractal Dimension
  • Reading: Hall, chapters 10, 11

Friday, Nov. 17: (The Chaos Game)

  • Problem Set 4 Due
  • Rules of the Game
  • A Program for the Chaos Game

Monday, Nov. 27: (Strange Attractors)

  • Box Counting Dimension of the Cantor Set
  • The Koch Snow Flake
  • Attractor of the Chaos Game
  • Strange Attractors
  • Reading: Gleick, pp. 121-153; Hall, color plates

Wednesday, Nov. 29: (Julia Sets)

  • Complex Numbers
  • Curlicues
  • Mandelbrot Mapping
  • Julia Sets
  • Reading: Gleick, pp. 215-240; Hall, chapters 10, 11

Friday, Dec. 1: (Atomic Ionization and 2D Mappings)

  • The Hydrogen Atom
  • 1D Version of the Hydrogen Atom
  • Splitting the Hydrogen Atom: A Real-Life Julia Set
  • Baker's Mapping
  • Phase Portraits
  • Cat Map

Monday, Dec. 4: (Analysis of Kicked Rotor Dynamics)

  • Problem Set 5 Due
  • Kicked Rotor Dynamics: Standard Mapping
  • Stroboscopic Phase Portrait
  • Regular Islands
  • Chaotic Regions
  • KAM Lines
  • Julia Set of the Dissociating Rotor

Dec. 6: (Chaos in the Solar System)

  • Is the Solar System Stable?
  • Tumbling Hyperion
  • Catastrophic vs. Non-Catastrophic Chaos
  • The Role of KAM Lines for the Stability of the Solar System
  • Reading: Gleick, pp. 121-153; Hall, chapters 8, 18

Dec. 8: (Last Lecture)

  • Structure of the Final Exam
  • Review of Course Material
  • Modelling with Mappings: Parasite/Host Eco-System
  • Reduction of 2D Mappings to 1D Mappings with Memory
  • Alternative Ways of Fractal Rendering
  • A Method for the Encryption of Images based on Chaos
  • Course Evaluation
  • Reading: Hall, chapter 4