Difference between revisions of "Fore and back"
Jump to navigation
Jump to search
("S2" is not a symmetry) |
(glider synthesis) |
||
Line 1: | Line 1: | ||
{{Oscillator|p=2|c=24|h=4|v=0.15|bx=7|by=7|name=Fore and back|pname=foreandback|discoveryear=1994|discoverer=Achim Flammenkamp|life105=true|life106=true|plaintext=true|rle=true|animated=true|v=0.15}} | {{Oscillator|p=2|c=24|h=4|v=0.15|bx=7|by=7|name=Fore and back|pname=foreandback|discoveryear=1994|discoverer=Achim Flammenkamp|life105=true|life106=true|plaintext=true|rle=true|animated=true|v=0.15}} | ||
'''Fore and back''' (or '''complementary blinker''') is a [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]] that was found by [[:Category:Patterns found by Achim Flammenkamp|Achim Flammenkamp]] in July [[:Category:Patterns found in 1994|1994]]. It is about the 38th most common naturally-occurring oscillator, being less common than [[boat on spark coil]] and [[griddle and block]], about as common as [[21P2]], and more common than [[trans-block and long hook eating tub]] and [[beacon and long hook|trans-beacon down and long hook]].<ref>{{cite web|url=http://wwwhomes.uni-bielefeld.de/achim/freq_top_life.html |title=Most seen natural occurring ash objects in Game of Life |author=Achim Flammenkamp |date=September 7, 2004 |accessdate=January 15, 2009}}</ref> | '''Fore and back''' (or '''complementary blinker''') is a [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]] that was found by [[:Category:Patterns found by Achim Flammenkamp|Achim Flammenkamp]] in July [[:Category:Patterns found in 1994|1994]]. It is about the 38th most common naturally-occurring oscillator, being less common than [[boat on spark coil]] and [[griddle and block]], about as common as [[21P2]], and more common than [[trans-block and long hook eating tub]] and [[beacon and long hook|trans-beacon down and long hook]].<ref>{{cite web|url=http://wwwhomes.uni-bielefeld.de/achim/freq_top_life.html |title=Most seen natural occurring ash objects in Game of Life |author=Achim Flammenkamp |date=September 7, 2004 |accessdate=January 15, 2009}}</ref> | ||
In August, 2013 a 24-glider synthesis of this oscillator was found by Martin Grant, based on a soup, provided by Lewis Patterson. Several days later Mark Niemiec improved this result, having found a 20-glider synthesis.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=8688#p8688|title=Synthesising Oscillators|date=|accessdate=September 10, 2013}}</ref> | |||
==See also== | ==See also== |
Revision as of 19:34, 10 September 2013
Fore and back | |||||||
View animated image | |||||||
View static image | |||||||
Pattern type | Oscillator | ||||||
---|---|---|---|---|---|---|---|
Number of cells | 24 | ||||||
Bounding box | 7 × 7 | ||||||
Period | 2 | ||||||
Mod | Unknown | ||||||
Heat | 4 | ||||||
Volatility | 0.15 | ||||||
Strict volatility | 0.15 | ||||||
Discovered by | Achim Flammenkamp | ||||||
Year of discovery | 1994 | ||||||
|
Fore and back (or complementary blinker) is a period 2 oscillator that was found by Achim Flammenkamp in July 1994. It is about the 38th most common naturally-occurring oscillator, being less common than boat on spark coil and griddle and block, about as common as 21P2, and more common than trans-block and long hook eating tub and trans-beacon down and long hook.[1]
In August, 2013 a 24-glider synthesis of this oscillator was found by Martin Grant, based on a soup, provided by Lewis Patterson. Several days later Mark Niemiec improved this result, having found a 20-glider synthesis.[2]
See also
References
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ "Synthesising Oscillators". Retrieved on September 10, 2013.
External links
- Fore and back at the Life Lexicon
Categories:
- Pages using duplicate arguments in template calls
- Patterns
- Oscillators with 24 cells
- Periodic objects with minimum population 24
- Patterns with 24 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Oscillators
- Oscillators with period 2
- Oscillators with heat 4
- Oscillators with volatility 0.15
- Oscillators with strict volatility 0.15
- Patterns with C2/D2d symmetry