Tr
 Usage
Notes
 Further Examples
Here is a  matrix.
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This gives its trace.
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This gives a generalized trace of the same matrix.
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This generalized trace gives the diagonal elements.
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This gives another generalized trace.
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The trace of a matrix is equal to the sum of its eigenvalues.
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Here is a tensor.
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Here are its dimensions.
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This gives the trace.
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This gives a generalized trace.
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This gives a generalized trace down to level  .
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