Gabriel's p138 is a period-138 oscillator discovered by Gabriel Nivasch on October 13, 2002 . In terms of its 36 cells , it is, by far, the smallest known period 138 oscillator.[1] Within a month of its discovery, Jason Summers found a 12-glider synthesis for this oscillator.[2]
The first known semi-natural appearance of this oscillator was in November 2014 in a soup found by Dongook Lee using apgsearch .[3] About 1 in 2.5 million odd-width 90° symmetric soups (C4_1) form a Gabriel's p138 in the centre.
The simplest active region in Gabriel's p138 is the octomino II .
x = 29, y = 29, rule = B3/S23
5b2o$5b2o3$12b3o$11bo2bo12b2o$11bo2bo12b2o$11b2o4$21b3o$21bo2bo$24bo$
4b3o15b3o$4bo$4bo2bo$5b3o4$16b2o$2o12bo2bo$2o12bo2bo$14b3o3$22b2o$22b
2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 WIDTH 640 HEIGHT 640 ZOOM 18 GPS 20 AUTOSTART ]]
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A variant of Gabriel's p138 with blocks. The interaction is a null reaction .(click above to open LifeViewer ) RLE : here Plaintext : here Catagolue : here
x = 46, y = 43, rule = B3/S23
35b3o$35bo2bo$35bo2bo$37b2o4$26b3o$25bo2bo$25bo$25b3o15b3o$45bo$42bo2b
o$16b2o24b3o$16b2o3$32b2o$32bo2bo$32bo2bo$33b3o2$10b3o$10bo2bo$10bo2bo
$12b2o4$b3o$o2bo$o$3o15b3o$20bo$17bo2bo$17b3o4$7b2o$7bo2bo$7bo2bo$8b3o
!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 WIDTH 800 HEIGHT 700 ZOOM 12 GPS 20 AUTOSTART ]]
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Two copies of Gabriel's p138 hassling a block (or pond in some phases), producing a p276 oscillator(click above to open LifeViewer ) RLE : here Plaintext : here Catagolue : here
x = 50, y = 27, rule = B3/S23
3$10b3o$9bo2bo$9bo2bo24b3o$9b2o$41b2o$31bo9bobo$31bo11bo$19b3o9bo9bob
2o$19bo2bo18b2o2bo$22bo21b2o$2b3o15b3o14b3o$2bo$2bo2bo$3b3o4$14b2o$12b
o2bo$12bo2bo$12b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 WIDTH 800 HEIGHT 700 ZOOM 12 GPS 20 AUTOSTART ]]
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Gabriel's p138 as a blinker hassler,[4] showing a reaction similar to the 72-cell variant of p44 pi-heptomino hassler (click above to open LifeViewer ) RLE : here Plaintext : here Catagolue : here
See also
References
External links