https://wiki.bbchallenge.org/w/index.php?action=history&feed=atom&title=BB%282%2C8%29 2026-05-01T11:17:46Z Revision history for this page on the wiki MediaWiki 1.43.5 https://wiki.bbchallenge.org/w/index.php?title=BB(2,8)&diff=6647&oldid=prev 2026-03-19T18:35:12Z

<p>Added expected number of holdouts</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:35, 19 March 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The 2-state 8-symbol [[Busy Beaver]] problem, BB(2,8), is unsolved and unexplored. With [[Cryptids]] like [[Hydra]] in the preceding domain [[BB(2,5)]], we know that we must solve a [[Collatz-like]] problem in order to solve BB(2,8). The current BB(2,8) [[champion]] is simply inherited from [[BB(2,6)]] as BB(2,8) has not yet been explored.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The 2-state 8-symbol [[Busy Beaver]] problem, BB(2,8), is unsolved and unexplored. With [[Cryptids]] like [[Hydra]] in the preceding domain [[BB(2,5)]], we know that we must solve a [[Collatz-like]] problem in order to solve BB(2,8). The current BB(2,8) [[champion]] is simply inherited from [[BB(2,6)]] as BB(2,8) has not yet been explored.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is known from the enumeration of [[BB(2,7)]] that BB(2,8) will be hard to enumerate.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is known from the enumeration of [[BB(2,7)]] that BB(2,8) will be hard to enumerate. <ins style="font-weight: bold; text-decoration: none;">It is expected that an enumeration of this domain will leave about 5,510,000,000,000 [[holdouts]].&lt;ref&gt;https://discord.com/channels/960643023006490684/960643023530762341/1484060947424477235&lt;/ref&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== References ==</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:BB Domains]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:BB Domains]]</div></td></tr> <!-- diff cache key mediawiki:diff:1.41:old-6311:rev-6647:php=table --> </table>

Polygon https://wiki.bbchallenge.org/w/index.php?title=BB(2,8)&diff=6311&oldid=prev 2026-02-20T14:12:04Z

<p>Made this page consistent with other BB Domain pages</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:12, 20 February 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Il problema di bb</del>(2,8) (<del style="font-weight: bold; text-decoration: none;">macchina di Turing con </del>2 <del style="font-weight: bold; text-decoration: none;">stati e </del>8 <del style="font-weight: bold; text-decoration: none;">simboli</del>) <del style="font-weight: bold; text-decoration: none;">e inesplorato</del>, <del style="font-weight: bold; text-decoration: none;">cio significa che bb</del>(2,8) <del style="font-weight: bold; text-decoration: none;">e molto difficile</del>, <del style="font-weight: bold; text-decoration: none;">non ci sono limiti inferiori (lower bound</del>) <del style="font-weight: bold; text-decoration: none;">per bb</del>(2,8)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The 2-state 8-symbol [[Busy Beaver]] problem, BB</ins>(2,8)<ins style="font-weight: bold; text-decoration: none;">, is unsolved and unexplored. With [[Cryptids]] like [[Hydra]] in the preceding domain [[BB</ins>(2<ins style="font-weight: bold; text-decoration: none;">,5)]], we know that we must solve a [[Collatz-like]] problem in order to solve BB(2,</ins>8)<ins style="font-weight: bold; text-decoration: none;">. The current BB(2,8) [[champion]] is simply inherited from [[BB(2</ins>,<ins style="font-weight: bold; text-decoration: none;">6)]] as BB</ins>(2,8) <ins style="font-weight: bold; text-decoration: none;">has not yet been explored.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">It is known from the enumeration of [[BB(2</ins>,<ins style="font-weight: bold; text-decoration: none;">7</ins>)<ins style="font-weight: bold; text-decoration: none;">]] that BB</ins>(2,8) <ins style="font-weight: bold; text-decoration: none;">will be hard to enumerate.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:BB Domains]]</ins></div></td></tr> <!-- diff cache key mediawiki:diff:1.41:old-6189:rev-6311:php=table --> </table>

Polygon https://wiki.bbchallenge.org/w/index.php?title=BB(2,8)&diff=6189&oldid=prev 2026-02-11T20:00:22Z

<p>Created page with &quot;Il problema di bb(2,8) (macchina di Turing con 2 stati e 8 simboli) e inesplorato, cio significa che bb(2,8) e molto difficile, non ci sono limiti inferiori (lower bound) per bb(2,8)&quot;</p> <p><b>New page</b></p><div>Il problema di bb(2,8) (macchina di Turing con 2 stati e 8 simboli) e inesplorato, cio significa che bb(2,8) e molto difficile, non ci sono limiti inferiori (lower bound) per bb(2,8)</div>

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