Actual Infinity is a concept that exists as a whole in one time.

Infinities Infinity,Actual Infinity Omega Omega 0,Omega 0 * 2,Omega^2,Omega^^2 Greek Epsilon 0,Zeta 0,Eta 0 Bieban hierarchy Bieban hiearchy,Feferman-Schute,Ackermann Number,Small Veblen