/// <summary>
/// Divide operator - runs through every combination of
/// items in the two sets and performs a divide operation on
/// them; and then puts the result in a new distinct set.
/// </summary>
/// <param name="rhs">Right hand side set</param>
/// <returns>Result of the division of the two sets</returns>
public Set <T> Divide(Set <T> rhs) =>
new Set <T>((from y in rhs.AsEnumerable()
from x in this.AsEnumerable()
select TypeDesc.Divide(x, y, TypeDesc <T> .Default)), true);
public Set <T> Product(Set <T> rhs) =>
new Set <T>((from x in this.AsEnumerable()
from y in rhs.AsEnumerable()
select TypeDesc.Product(x, y, TypeDesc <T> .Default)).Distinct());