https://wiki.bbchallenge.org/w/index.php?action=history&feed=atom&title=User%3ADF476%2FBB2Zoology 2026-05-01T03:37:57Z Revision history for this page on the wiki MediaWiki 1.43.5 https://wiki.bbchallenge.org/w/index.php?title=User:DF476/BB2Zoology&diff=1455&oldid=prev 2025-02-02T07:57:38Z

<p>Created page with &quot;I&#039;m working on creating this page for the wiki. This is a complete Zoology for all 2×2 TMs, considering halting and non-halting (including free-halting TMs, that is, machines that don&#039;t have any undefined or halting transition) machines. All TNF machines are included so that &lt;code&gt;0RA---_------&lt;/code&gt; and &lt;code&gt;0RB---_1LA1LA&lt;/code&gt; are both valid options that are actually considered in this zoology. == Non-halting machines == In general, there are 130 machines, 106...&quot;</p> <p><b>New page</b></p><div>I&#039;m working on creating this page for the wiki.<br /> <br /> This is a complete Zoology for all 2×2 TMs, considering halting and non-halting (including free-halting TMs, that is, machines that don&#039;t have any undefined or halting transition) machines. All TNF machines are included so that &lt;code&gt;0RA---_------&lt;/code&gt; and &lt;code&gt;0RB---_1LA1LA&lt;/code&gt; are both valid options that are actually considered in this zoology.<br /> <br /> == Non-halting machines ==<br /> In general, there are 130 machines, 106 of which are in TNF-1RB, 22 in TNF-0RB, and we also have &lt;code&gt;0RA---_------&lt;/code&gt; and &lt;code&gt;1RA---_------&lt;/code&gt;<br /> <br /> === Cyclers ===<br /> There are 17 [[Cyclers]] in the 2×2 domain. <br /> <br /> ==== Record cyclers ====<br /> <br /> * {{TM|1RB0RB_0LA---}}, one of the 8 cyclers with a record period of 4.<br /> * {{TM|1RB1LB_1LA1RA}}, the pre-period champion with a pre-period of 5.</div>

DF476