Port to Julia of the Gap3 package Chevie

Automatically compose packages

Univariate (Laurent) polynomials and rational fractions

Groups, Permutations and Permutation groups

Multivariate (Puiseux) polynomials and rational fractions

Elements of free modules

Cyclotomic numbers (sums of root of unity with rational coefficients)

Finite posets.

Computes the fundamental group of the complement of a curve in the 2-dimensional complex space

Integral matrices: Hermite, Smith normal forms and lattice functions

Group presentations

Combinatorics and number theory (mostly inspired by GAP3)

Finite fields, elements of finite fields and modular numbers

Signed permutations

Product of cyclotomic polynomials

Linear algebra on an arbitrary field or ring