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3.12 Nonlinear Simplification Techniques 419
3.12.6 ShowLevel
ShowLevel[dae]
ShowLevel[dae, level]
highlights parts of dae influenced by nonlinear
simplification routines for all levels
highlights parts in levels of dae given by level
Command structure of ShowLevel.
The command ShowLevel displays the equation system dae and highlights those parts of the equations
which are influenced by nonlinear simplification functions such as CancelTerms (Section 3.12.3).
The second argument level can either be a number or a list of numbers. If it is a number, then exactly
this level is highlighted. If it is a list of numbers {l , † † †, l n } then the levels l , , l n are highlighted.
The level argument corresponds to the level argument of CancelTerms and to the output of
Statistics (Section 3.6.17).
The level specification of ShowLevel does not correspond to the level of the internal
Mathematica representation of dae.
See also: ShowCancellations (Section 3.12.7), Statistics (Section 3.6.17),
CancelTerms (Section 3.12.3).
3.12.7 ShowCancellations
ShowCancellations[dae]
highlights those parts of dae which have been removed by
nonlinear simplification routines
Command structure of ShowCancellations.
The command ShowCancellations displays the equation system dae and highlights those parts of
the equations which have been removed by nonlinear simplification functions such as CancelTerms
(Section 3.12.3). You have to set the value of the CancelTerms option RecordCancellations to True
to activate the history recording feature.
Note that dae is not the return value of a nonlinear simplification routine but its argument.
See also: ShowLevel (Section 3.12.6), CancelTerms (Section 3.12.3).