muEC::SFA::SfA2TableVar – symmetric functions appearing in an expression

Collect the symmetric functions appearing in an expression.

→ Examples

Call:

muEC::SFA::SfA2TableVar(sfa, <b>)

Parameters:

sfa: 

any valid expression in SFA

Options:

b: 

a basis belonging to SFA::SFABases

Related Functions:

muEC::SYMF::Sf2TableVar

Details:

The muEC::SFA::SfA2TableVar function extracts symmetric functions appearing in sfa, and returns a table indexed by each basis b, each entry being itself a table indexed by each alphabet belonging to a b-function. The final entry is the set of indexing vectors of the b-function.

When a base is specified as second argument, muEC::SFA::SfA2TableVar only returns the second table corresponding to the b-functions appearing in sfa.

Example 1:

muEC::SFA::SfA2TableVar( q*s[3,2](A1)^2*m[3,1](p[2](A1))

            - s[2](A1)*h[3,2](k) );

math

last(1)[s][A1];

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muEC::SFA::SfA2TableVar( q*s[3,2](A1)^2*m[3,1](p[2](A1))

            - s[2](A1)*h[3,2](k), s );

math