muEC::SYMF::Sf2Char – converts a symmetric function into a virtual character

The muEC::SYMF::Sf2Char function converts a symmetric function into a virtual character. This function is the inverse of Char2Sf.

The muEC::SYMF::Sf2Char function realizes the isomorphism between the linear space of homogeneous symmetric functions of degree n and class functions on the symmetric group of degree n (Frobenius isomorphism).

The result is a linear combination of cl[part] where part is a partition.

→ Examples

Call:

muEC::SYMF::Sf2Char(sf)

Parameters:

sf

any symmetric function

Related Functions:

muEC::SYMF::Char2Sf, muEC::SYMF::SfInternal, muEC::SYMF::SfPlethysm, muEC::SYMF::SfZee

Example 1:

muEC::SYMF::Sf2Char( s[3,1,1] );

math

muEC::SYMF::Sf2Char( p[3]*s[3] - e[4] );

math