* OrdinaryArithmetic
* DecimalArithmetic
* FractionalArithmetic
+ * FractionalExpressionArithmetic
* High_orderExpression_base
* Factorization
* Expansion
- * FactorialExpression
* PartialFractionExpansion
== Mint::Solver
* OrdinaryArithmetic
* DecimalArithmetic
* FractionalArithmetic
+ * FractionalExpressionArithmetic
* High_orderExpression_base
* Factorization
* Expansion
- * FactorialExpression
* PartialFractionExpansion
-== TODO:
-Move description to code.
-