According to the answer at Is the Eastern Orthodox doctrine of "the Monarchy of the Father" consistent with the Athanasian creed?, the Revised Catechism says...
094 What difference is there between the Persons of the Holy Trinity?
God the Father is neither begotten nor proceeds from any other Person, he is the cause, source and principle. This is called the Monarchy of the Father.
Does this this mean the father does not require the son or holy spirit to exist, but the son and holy spirit are dependent on the father for their existence?