diffalg[derivatives] - return the derivatives occurring in a differential polynomial
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Calling Sequence
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derivatives (p, R, code)
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Parameters
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p
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differential polynomial in R
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R
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differential polynomial ring
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code
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-
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(optional) name; 'increasingly' or 'decreasingly'
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Description
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The function derivatives returns the set of the derivatives occurring in the differential polynomial p.
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If the third parameter is present, the function returns the list of the derivatives, sorted increasingly or decreasingly, with respect to the ranking of R.
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The command with(diffalg,derivatives) allows the use of the abbreviated form of this command.
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