Athanasian...
Is that before or after the Nicene?
I try to follow some of the religion threads, but I'm not even sure what Arianism is...
After.
Arius - Presbyter in the Alexandrian church. Held that Jesus was the begotten son of father, and thus had a beginning.
Athanasius - served as a deacon at the Council of Nicaea. Opposed this view -- claiming that it made Jesus a lesser deity. Athanasius held that Jesus was the unbegotten son (whatever that means) and was, in fact, the substance of God in corporal form.
At Nicaea 325CE, the believers of both views where roughly equal. Constantine settled the dispute by siding with Athanasius and exiling Arius.
After Constantine died, Constantius II recalled Arius and Athanasius (now bishop of Alexandria) was declared anathema.
After more infighting, the Council of Constantinople 360CE reaffirmed the that Jesus was like the Father (Athanasian view).
In 381 the Second Ecumenical Council met at Constantinople. The Athanasian doctrine (the Athanasian Creed) was declared an article of faith and Arianism was heresy.