Difference between revisions of "Siffrin's p103"
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|rle = true | |rle = true | ||
|apgcode = xp103_ya252zyboo8gz0gy957423z121y17bjq7zypgc48gzykgggw31333y1252zyi358fezymgzyl121 | |apgcode = xp103_ya252zyboo8gz0gy957423z121y17bjq7zypgc48gzykgggw31333y1252zyi358fezymgzyl121 | ||
|synthesis = 58 | |||
|synthesis = | |||
|pentadecathlonid = 68P103 | |pentadecathlonid = 68P103 | ||
|viewerconfig = #C [[ HEIGHT 560 ZOOM 12 GPS 12 ]] | |viewerconfig = #C [[ HEIGHT 560 ZOOM 12 GPS 12 ]] | ||
}} | }} | ||
'''siffrin's p103''' is a {{period|103}} [[oscillator]] found by [[siffrin normal]] on February 21, {{year|2026}} <ref name="post225892" /> | '''siffrin's p103''' is a {{period|103}} [[oscillator]] found by [[siffrin normal]] on February 21, {{year|2026}}.<ref name="post225892" /> It consists of four copies of an unnamed active object and four [[tub]]s acting as [[rock]]s, and produces two internal unnamed sparks. With 68 cells, it is the smallest known period-103 oscillator, well below the 180-celled syringe-based loop. | ||
== Discovery == | == Discovery == | ||
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== Synthesis == | == Synthesis == | ||
On February 23, {{year|2026}}, [[Chris857]] found a {{gliders|76}} synthesis of the long boat version from the soup result, along with a synthesis of the tub version which [[Evin]] reduced to {{gliders|84|text=84 gliders}}.<ref name="post225920"/><ref name="post225923"/><ref name="j13217514647"/> | On February 23, {{year|2026}}, [[Chris857]] found a {{gliders|76}} synthesis of the long boat version from the soup result, along with a synthesis of the tub version which [[Evin]] reduced to {{gliders|84|text=84 gliders}}.<ref name="post225920"/><ref name="post225923"/><ref name="j13217514647"/> Chris857 further reduced the synthesis of the long boat version to {{gliders|66|text=66 gliders}} and the tub version to {{gliders|74|text=74 gliders}}, then to {{gliders|58|text=58 gliders}} for the tub, long boat and [[barge]] versions.<ref name="post225930"/> | ||
== References == | == References == | ||
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|title = Re: Synthesising Oscillators | |title = Re: Synthesising Oscillators | ||
|author = Evin | |author = Evin | ||
|date = February 23, 2026 | |||
}}</ref> | |||
<ref name="post225930">{{LinkForumThread | |||
|format = ref | |||
|p = 225930 | |||
|title = Re: Synthesising Oscillators | |||
|author = Chris857 | |||
|date = February 23, 2026 | |date = February 23, 2026 | ||
}}</ref> | }}</ref> | ||
</references> | </references> | ||
== External links == | |||
* {{LinkCatagolue|xp103_ya252zyboo8gz0gy957423z121y17bjq7zypgc48gzykgggw31333y1252zyi358fezymgzyl121}} | |||
:* {{LinkCatagolue|xp103_ya35a4zycgggzggyabf856z1252y1em6kezy711yeo8gzyq72667y14akozyj6ahvtzzym25ac|name=the first discovered form|style=raw}} (with [[long boat]]s instead of [[tub]]s) | |||
__NOTOC__ | __NOTOC__ | ||
{{DISPLAYTITLE:siffrin's p103}} | {{DISPLAYTITLE:siffrin's p103}} | ||
Latest revision as of 12:11, 24 February 2026
| siffrin's p103 | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 68 | ||||||||
| Bounding box | 42 × 42 | ||||||||
| Period | 103 (mod: 103) | ||||||||
| Heat | 28 | ||||||||
| Volatility | 0.98 | 0.98 | ||||||||
| Kinetic symmetry | xk | ||||||||
| Discovered by | siffrin normal | ||||||||
| Year of discovery | 2026 | ||||||||
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siffrin's p103 is a period-103 oscillator found by siffrin normal on February 21, 2026.[1] It consists of four copies of an unnamed active object and four tubs acting as rocks, and produces two internal unnamed sparks. With 68 cells, it is the smallest known period-103 oscillator, well below the 180-celled syringe-based loop.
Discovery
A variant with long boats instead of tubs was found in the H4_x4 symmetry (the GPU-filtered counterpart of D4_x4), shortly after GPU searching with diagonal symmetry and 90° rotations was implemented in apgsearch.
| The soup from whence it emerged (click above to open LifeViewer) |
Synthesis
On February 23, 2026, Chris857 found a 76-glider synthesis of the long boat version from the soup result, along with a synthesis of the tub version which Evin reduced to 84 gliders.[2][3][4] Chris857 further reduced the synthesis of the long boat version to 66 gliders and the tub version to 74 gliders, then to 58 gliders for the tub, long boat and barge versions.[5]
References
- ↑ DroneBetter (February 22, 2026). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Chris857 (February 23, 2026). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Evin (February 23, 2026). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#13217514647) (February 23, 2026). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ Chris857 (February 23, 2026). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
- the first discovered form (with long boats instead of tubs)
Categories:
- Patterns
- Oscillators with 68 cells
- Periodic objects with minimum population 68
- Patterns with 68 cells
- Patterns found by siffrin normal
- Patterns found in 2026
- Patterns that can be constructed with between 50 and 59 gliders
- Oscillators
- Oscillators with period 103
- Prime-period oscillators
- Oscillators with mod 103
- Oscillators with heat 28
- Oscillators with volatility 0.98
- Oscillators with strict volatility 0.98
- Oscillators with xk symmetry