User blog comment:Hyp cos/TON, stable ordinals, and my array notation/@comment-31580368-20181125151402

> "(β,2)-stable for some β seems stronger than 1[2]stable, and the least ordinal with such property is the ζ in ITTM (the supremum of all eventually writable ordinals)." According to Hamkins ITTM-ordinal is Δ12 subset of ω. According to Madore (zoo 2.25) this ordinal is bigger that model of ZFC. But I have not found any data about comparison this orddinal with model of MK or ZFC- + innacessible cardinal.