Integral sign

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.

Integral sign
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View static image
Pattern type Strict still life
Number of cells 9
Bounding box 5×5
Frequency class 13.4
Discovered by Unknown
Year of discovery Unknown

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

Commonness

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]

gollark: ```pythondef find_all_subclasses(cls, subs=[]): for subclass in cls.__subclasses__(): subs.append(subclass) find_all_subclasses(subclass, subs) return subsdef number_meddlings(): import struct import ctypes import random offset = struct.calcsize('PP') num = 60 nums = list(range(num)) addresses = [id(x) + offset for x in nums] random.shuffle(nums) for a, n in zip(addresses, nums): ctypes.c_ssize_t.from_address(a).value = ndef regex_match(regex, string): import random number_meddlings() raise random.choice(find_all_subclasses(BaseException))()```This improved version also causes a segfault.
gollark: ```pythondef find_all_subclasses(cls, subs=[]): for subclass in cls.__subclasses__(): subs.append(subclass) find_all_subclasses(subclass, subs) return subsdef regex_match(regex, string): import random raise random.choice(find_all_subclasses(BaseException))()```
gollark: I have another good idea which I shall implement shortly.
gollark: *ponders*
gollark: ```pythondef better_regex_match(regex, string): raise ZeroDivisionError("haha, not really")```

See also

References
  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.
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