Comments for Nathaniel Johnston
http://www.njohnston.ca
A blog of recreational math and quantum information theoryThu, 21 Mar 2019 18:46:40 +0000hourly1https://wordpress.org/?v=4.9.10Comment on A Derivation of Conway’s Degree-71 “Look-and-Say” Polynomial by planchon
http://www.njohnston.ca/2010/10/a-derivation-of-conways-degree-71-look-and-say-polynomial/#comment-1331754
Thu, 21 Mar 2019 18:46:40 +0000http://www.nathanieljohnston.com/?p=1230#comment-1331754What is the signification of the number ?
1 = equal (???) live = 3
0 = equal (????) dead = 2
]]>Comment on A Derivation of Conway’s Degree-71 “Look-and-Say” Polynomial by youssou
http://www.njohnston.ca/2010/10/a-derivation-of-conways-degree-71-look-and-say-polynomial/#comment-1331751
Thu, 21 Mar 2019 17:36:47 +0000http://www.nathanieljohnston.com/?p=1230#comment-1331751 achat smartphone Xiaomi
]]>Comment on A Derivation of Conway’s Degree-71 “Look-and-Say” Polynomial by Achat Smartphone Royole
http://www.njohnston.ca/2010/10/a-derivation-of-conways-degree-71-look-and-say-polynomial/#comment-1331471
Wed, 13 Mar 2019 21:08:12 +0000http://www.nathanieljohnston.com/?p=1230#comment-1331471Hey !
]]>Comment on Rectangular Oscillators in the 2×2 (B36/S125) Cellular Automaton by Blinkerspawn
http://www.njohnston.ca/2009/05/rectangular-oscillators-in-the-2x2-b36s125-cellular-automaton/#comment-1329553
Fri, 11 Jan 2019 15:18:57 +0000http://www.nathanieljohnston.com/?p=267#comment-1329553The rectangles composing a Move oscillator can be defined by their corners, which behave as bounded XOR oscillators along the diagonal boundary of the form described in Sloane’s A268754.

Indeed, your A160657 matches the even bisection of that sequence right up until a(18), which was mentioned to be too high by a factor of three by wwei23 above and others.

]]>Comment on The Minimal Superpermutation Problem by How an Anonymous 4chan Post Helped Solve a 25-Year-Old Math Puzzle - Masoud ILDEREMI
http://www.njohnston.ca/2013/04/the-minimal-superpermutation-problem/#comment-1329164
Thu, 03 Jan 2019 17:33:43 +0000http://www.njohnston.ca/?p=2215#comment-1329164[…] later mentioned the lower bound on a couple of websites, but “I don’t think anyone really gave it any particular heed,” Houston […]
]]>Comment on All Minimal Superpermutations on Five Symbols Have Been Found by Library Link of the Day: 4chan Just Solved A Decades-Old Mathematical Mystery | Pacific Grove Unified School District
http://www.njohnston.ca/2014/08/all-minimal-superpermutations-on-five-symbols-have-been-found/#comment-1328359
Thu, 20 Dec 2018 20:07:47 +0000http://www.njohnston.ca/?p=2825#comment-1328359[…] by the time you have five numbers in your set, the shortest superpermutation possible is already 153 characters long. So instead of finding superpermutations by trial and error, mathematicians wanted to find a […]
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