=begin
= Changes

== 0.57 (2002.03.16)
* New class
  * Set
  * Map
  * Group
  * PermuationGroup
  * AlgebraicExtensionField
* New methods
  * Galois#group
  * Polynomial#splitting_field
* Rename MinimalDecompositionField to decompose
* Move *.rb to lib/
* Define Polynomial.to_ary and MPolynomial.to_ary

== 0.56 (2002.02.06)
* MPolynomial#with_ord
* Orderings belong to MPolynomial.
* MIndex is not a subclass of Array, now.
* "Integer < Numeric" ==> "Integer"

== 0.55 (2001.11.15)
* Improve Algorithm of Factorization over algebraic fields

== 0.54 (2001.11.05)
* Elementary Divisor
* Jordan Form
* Minimal Decomposition Field

== 0.53 (2001.10.03)

* move "MatrixAlgebra" to "Algebra::MatrixAlgebra"
* move "MatrixAlgebra::Vector" to "Algebra::Vector"
* move "MatrixAlgebra::Covector" to "Algebra::Covector",
* move "MatrixAlgebra::SquareMatrix" to "Algebra::SquareMatrix"

== 0.52 (2001.09.22)

* One-variate polynomial
  * Fundamental operations (addition, multiplication, quotient/remainder, ...)
  * factorization
* Multi-variate polynomial
  * Fundamental operations (addition, multiplication, ...)
  * factorization
  * Creating Groebner-basis, quotient/remainder by Groebner-basis.
* Algebraic systems
  * Creating quotient fields
  * Creating residue class fields
  * Operating matrices.
* Linear Algebra
  * Diagonalization of Symmetrix Matrix

== 0.40 (2001.03.03)

* Initial Version

=end
