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## `TYP::Permutation` -- how permutations are encoded in mu-EC

#### Introduction

This part describes how the elements of the symmetric group of degree n, n>=1, are represented in mu-EC.

A permutation is denoted by the list of the images of i, for i in [1,n], under the permutation. In other words, a permutation perm is represented by the list [perm(1), ...,perm(n)] where perm(i) is the image of i under the permutation perm.

#### Example 1

    >> muEC::TYP::IsPerm( [2,3,1] );

                                       TRUE

#### Related Functions

`IsPerm`

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MuPAD Combinat, an open source algebraic combinatorics package