public override bool Equals(object obj)
        {
            if (obj == null || GetType() != obj.GetType())
            {
                return false;
            }

            CEABAU objectToCompareWith = (CEABAU)obj;

            return objectToCompareWith.Math == Math
                && objectToCompareWith.NS == NS
                && objectToCompareWith.CS == CS
                && objectToCompareWith.ES == ES
                && objectToCompareWith.ED == ED;

        }
 public bool Equals(CEABAU other)
 {
     return Equals(other, this);
 }