diffalg[delta_leader] - return the difference between the derivation operators of the leaders of two differential polynomials
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Calling Sequence
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delta_leader (p, q, R)
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Parameters
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p, q
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differential polynomials
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R
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differential polynomial ring
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Description
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Let fp and fq denote the leaders of p and q. The function delta_leader returns a sequence, if it exists, of derivations s such that fp = differentiate (fq, s, R).
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The function returns FAIL if p or q belongs to the ground field of R or if fp and fq are derivatives of different differential indeterminates.
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The command with(diffalg,delta_leader) allows the use of the abbreviated form of this command.
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