/// <summary>
/// Addition of the specified leftElement and rightElement.
/// </summary>
/// <param name="leftElement">Left element.</param>
/// <param name="rightElement">Right element.</param>
/// <returns>The addition of the leftElement and rightElement (leftElement + rightElement)</returns>
/// <exception cref="InvalidCastException">When the cast was not possible.</exception>
/// <exception cref="NotSupportedException">When the dimension of the parameters is not equal to the set dimension of the instance.</exception>
public DirectSum <T, TMonoid> Addition(
DirectSum <T, TMonoid> leftElement,
DirectSum <T, TMonoid> rightElement)
{
if (leftElement.Dimension != this.Dimension)
{
throw new NotSupportedException("The dimension is not set right");
}
var tuple = leftElement.Add(rightElement) as DirectSum <T, TMonoid>;
if (tuple == null)
{
throw new InvalidCastException();
}
return(tuple);
}
