Cis-long³ hook with tail

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Cis-long3 hook with tail
x = 7, y = 6, rule = B3/S23 4bo$3bobo$2bo2bo$bo3b2o$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
Pattern type Strict still life
Number of cells 11
Bounding box 6 × 7
Frequency class 26.6
Static symmetry n
Discovered by Unknown
Year of discovery Unknown

Cis-long3 hook with tail is an 11-cell still life.

Construction

This still life is known to be constructible with 5 gliders.[1] Some known syntheses can be found in Mark Niemiec's database.[2] A 6-glider synthesis was found in March 2021.[3][4] A 5-glider synthesis was found in August 2022.[5]

x = 55, y = 33, rule = B3/S23 5bo46bo$3bobo46bobo$4b2o46b2o11$26bo$11bo14bobo$12b2o12b2o$11b2o10$5b 2o$6bo$2o3bo$bo2bo$bobo44bo$2bo44b2o$47bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 8 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 44 PAUSE 1 T 122 PAUSE 2 LOOP 123 ]]
A 5G synthesis[5]
(click above to open LifeViewer)
x = 39, y = 34, rule = B3/S23 22bo$21bo$21b3o3$22bo$21bo$21b3o4$37b2o$38bo$32b2o3bo$33bo2bo$33bobo$ 34bo4$20bo$19b2o$19bobo4$3o25b2o$2bo25bobo$bo26bo3$33b3o$33bo$34bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 8 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 28 PAUSE 1 T 42 PAUSE 1 T 53 PAUSE 2 LOOP 54 ]]
A 6G synthesis[3][4]
(click above to open LifeViewer)
x = 43, y = 39, rule = B3/S23 10bo$8bobo$9b2o11$9b3o$11bo$10bo30b2o$15b3o24bo$15bo20b2o3bo$16bo20bo 2bo$37bobo$38bo7$bo$b2o$obo2$33b3o$3b2o28bo$2bobo29bo$4bo2$31b2o$31bob o$31bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 8 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 2 T 12 PAUSE 1 T 48 PAUSE 1 T 65 PAUSE 2 LOOP 66 ]]
A 7G synthesis[2]
(click above to open LifeViewer)

Occurrence

It is the 33rd most common (i.e. 14th rarest) 11-cell still life out of 46. It is 35 times more common than the cis-long4 hook with tail. Surprisingly, it is more common (about 1.6×) than the cis-very long hook with tail, which has one fewer cell.

This still life does not occur in final patterns of collisions in octohash, octo3obj or octo3g databases.

Isomers

This still life is comprised of the normally unstable long3 hook with a normally unstable tail attached. This is one of two possible isomers, named cis due to the corner part of the hook being closer to the tail; the other isomer, trans-long3 hook with tail, has this corner part slightly farther.

See also

References

  1. xs11_4ai3zx123 at Adam P. Goucher's Catagolue
  2. 2.0 2.1 The 46 eleven-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 11/11-14.rle)
  3. 3.0 3.1 Ian07 (March 11, 2021). Re: Randomly enumerating glider syntheses (discussion thread) at the ConwayLife.com forums
  4. 4.0 4.1 shinjuku (#1092100649) (March 12, 2021). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  5. 5.0 5.1 shinjuku (#2910743302) (August 20, 2022). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links