in Mathematics, 4 hours ago, by
Simply Beautiful Art @AkivaWeinberger You look busy, but thought this might interest you: http://math.stackexchange.com/questions/2176715/is-the-set-of-all-ordinals-producible-through-ordinal-collapsing-functions-count And perhaps you could help me as well
I was recently learning about ordinal collapsing functions, which are a systematic way to produce very large countable ordinals. Before I talk about collapsing functions, I will briefly explain some ordinals:
$$\epsilon_0=\omega^{\omega^{\omega^{\dots}}}\bigg\}\omega\text{ powers going up}$$
$...
