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NOperator

NOperator[ig, functions][expr]
gives the action of the operator from Noether theory for a given Lie point symmetry ig and a given set of functions on an expression expr.
NOperator[ig, functions, JetOrder][expr]
gives the action of the operator from Noether theory for a given Lie-Bäcklund symmetry ig of order JetOrder and a given set of functions on an expression expr.
  • functions is given as a list of functions.
  • expr can be any expression including the functions and the derivatives of them.
EXAMPLESCLOSE ALL
Basic Examples   (2)
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The action of operator using a Lie point symmetry
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The action of operator using a Lie-Bäcklund point symmetry
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TUTORIALS
  • SYM and Conservation Laws