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## `SG::Perm2RRep` -- calculates the matrix representing a permutation in the regular representation

#### Call(s)

`SG::Perm2RRep(perm)`

#### Parameters

`perm` | - | any list denoting a permutation

#### Introduction

The `SG::Perm2RRep` function calculates the matrix representing `perm` in the regular representation. It amounts to consider `perm` as the linear operator acting on permutations by left multiplication.

#### Example 1

    >> muEC::SG::Perm2RRep( [2,3,1] );

                              +-                  -+
                              |  0, 0, 0, 0, 1, 0  |
                              |                    |
                              |  0, 0, 0, 0, 0, 1  |
                              |                    |
                              |  0, 1, 0, 0, 0, 0  |
                              |                    |
                              |  1, 0, 0, 0, 0, 0  |
                              |                    |
                              |  0, 0, 0, 1, 0, 0  |
                              |                    |
                              |  0, 0, 1, 0, 0, 0  |
                              +-                  -+

    >> muEC::SG::RRep2Perm( % );

                                     [2, 3, 1]

#### Related Functions

`Mat2Perm`, `Perm2Mat`, `RRep2Perm`

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MuPAD Combinat, an open source algebraic combinatorics package