diffalg
denote
convert a differential polynomial from an external form to another one
Calling Sequence
Parameters
Description
Examples
denote (q, code, R)
q
-
differential polynomial in R
code
name; jet, diff, or Diff
R
differential polynomial ring
Important: The diffalg package has been deprecated. Use the superseding package DifferentialAlgebra instead.
The command denote converts the differential polynomial q given in the notation defined on R to the notation code.
The command with(diffalg,denote) allows the use of the abbreviated form of this command.
withdiffalg:
R≔differential_ringderivations=t,ranking=u
R≔ODE_ring
p≔ut2−4u
denotep,diff,R
ⅆⅆtut2−4ut
Q≔differential_ringderivations=t,ranking=u,notation=diff
Q≔ODE_ring
q≔diffut,t,t−tut+diffut,t2
q≔ⅆ2ⅆt2ut−tut+ⅆⅆtut2
denoteq,jet,Q
−tu+ut2+ut,t
See Also
diffalg(deprecated)
diffalg(deprecated)/differential_algebra
diffalg(deprecated)/differential_ring
PDEtools,ToJet
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