BB(12): Difference between revisions

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The 12-state, 2-symbol Busy Beaver problem, BB(12,2), is unsolved and unexplored. The current BB(12) [[champion]] is {{TM|1LH1LA_1LI1RG_0RD1LC_0RF1RE_1LJ0RF_1RB1RF_0LC1LH_0LC0LA_1LK1LJ_1RZ0LI_0LD1LE|halt}}, which takes over <math>f_\omega^4(2 \uparrow\uparrow\uparrow 4-3)</math> steps to halt. It was dicovered by Racheline in 2024. Due to the discovery of [[Antihydra]] in [[BB(6)]], the existence of [[Collatz-like]] [[Cryptids]] in BB(12) is certain.
#REDIRECT [[Champions#2-Symbol_TMs]]
 
Based on a sample enumeration of [[BB(8)]], BB(12) is known to be very difficult to enumerate.
 
[[Category:BB Domains]]

Latest revision as of 10:51, 3 November 2026

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