He claimed to have invented a model for these motions and anomalies, without proposing an eccentric orb or an epicyclic orb.
This accords with the view that the luminaries are that which moves and that the orb is that which is fixed.
First assume that orb(c) contains no further critical points.
And what we have said is su$cient to abolish the existence of these two orbs in the heavens.
That motion of the orb, apart from the lag, could then be in an apparently opposite direction.
We define a total order on orb(z) as follows.
In either case, the positions of the extreme north and south points of the inclined orb are known.
She holds the scepter in her right hand and a rather squashed-looking orb in her left.
