In base y, y↑y is 10…(with y 0s). In any base, BB(y) >> y(↑^y)y for any large y. All of these numbers are small.https://twitter.com/DiscipleOfOrder/status/705142786148814848 …
I hereby inaugurate down arrow notation;
x↓y = BB(x↑y)
x↓↓y BB(BB(…BB(x↑↑y) times ...(x↓y)))
etc.
(Screw @ilanpi, http://mathworld.wolfram.com/DownArrowNotation.html …)
2:15 PM - 7 Mar 2016
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