Integral sign

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Integral sign
Integral sign image
Pattern type Strict still life
Number of cells 9
Bounding box 5×5
Discovered by Unknown
Year of discovery Unknown

Integral sign (or simply integral) is a 9-bit still life. It can eat gliders the same way that an Eater 1 eats, from either end. If the middle cell of the vertical line is removed, it becomes a bipole.

It can also be seen as a trans version of the house.


Integral sign is the nineteenth most common still life in Achim Flammenkamp's census, being less common than shillelagh but more common than boat-tie.[1] It is also the twenty-fifth most common object on Adam P. Goucher's Catagolue.[2]

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links