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Old   September 4, 2001, 04:01
Default error definition
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Zhou
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Silly equation about the error definition (for 1-D):

L-1 error: \sum(abs(df))*dx;

L-2 error: \sqrt(\sum(abs(df)**2)*dx);

L-intfy error: \maxval(abs(df))

where df is the difference between the numerical result and the exact solution, dx is the mesh size.

Are these right?

Many thanks.
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