The scale data structure
Description
Examples
The scale data structure is used to represent asymptotic scales (see MultiSeries for a definition).
A scale is represented as a table whose entries are:
'list'
The ordered list of functions in the scale;
'variable'
the name of the first function having entered the scale;
'varname'
the name of the variable given by the user;
'back'
the expression of this variable in terms of 'variable';
'log'
a table of the logarithms of the functions in the scale.
The functions in the scale are represented using the global name _var with three arguments. Thus, means that the function occurs in an expansion in the variable at the point , and is the expression of the function.
Scales being stored as tables, they can be extended during a computation.
Currently, only operations between multiseries expressed in the same scale are supported.
See Also
MultiSeries
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