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2 changes: 1 addition & 1 deletion notebooks/chap08.ipynb
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"source": [
"**Exercise:** Another version of the sand pile model, called the \"single source\" model, starts from a different initial condition: instead of all cells at the same level, all cells are set to 0 except the center cell, which is set to a very large value.\n",
"\n",
"Write a function that creates a `SandPile` object, sets up the single source initial condition, and runs until the pile reaches equilibrium. Does the results appear to be fractal?\n",
"Write a function that creates a `SandPile` object, sets up the single source initial condition, and runs until the pile reaches equilibrium. Does the result appear to be fractal?\n",
"\n",
"You can read more about this version of the sand pile model at http://math.cmu.edu/~wes/sandgallery.html"
]
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