Professor: Difference between revisions
Jump to navigation
Jump to search
Apple Bottom (talk | contribs) rules, symmetry, LinkCatagolue |
Neocaridina (talk | contribs) No edit summary |
||
| (32 intermediate revisions by 9 users not shown) | |||
| Line 1: | Line 1: | ||
{{Stilllife | {{Stilllife | ||
|name | |name = Professor | ||
|pname | |pname = cismirroredprofessor | ||
|type | |type = strict | ||
|c | |c = 46 | ||
|bx | |bx = 9 | ||
|by | |by = 11 | ||
|discoverer | |symmetry = -c | ||
|discoveryear | |discoverer = Adam P. Goucher | ||
|rulemin | |discoveryear = 2016 | ||
|rulemax | |rulemin = B/S23 | ||
| | |rulemax = B378/S012345678 | ||
|synthesis | |isorulemin = B/S2-cn3an | ||
| | |isorulemax = B1e2ikn34-int5-ekqr6-i78/S012345678 | ||
|synthesis = 8 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|apgcode = xs46_69b88bb8b96z69d11dd1d96 | |||
|viewerconfig = #C [[ THUMBSIZE 3 ZOOM 24 ]] | |||
}} | }} | ||
'''Professor''' is a 46-bit [[still life]] consisting of two | '''Professor''' is a 46-bit [[still life]] consisting of two large [[island]]s (resembling a [[long]]{{sup|4}} [[clips]]) partially stabilizing each other and further stabilized by two [[block]]s acting as [[induction coil]]s. | ||
The cis-mirrored variant of this still life | The cis-mirrored variant of this still life occurred [[natural]]ly from an [[symmetry|asymmetric]] [[soup]] on July 9, 2016,<ref name="post33066" /> in a [[haul]] submitted to [[Catagolue]] by [[Adam P. Goucher]]. It was formerly the largest still life to appear naturally, until its title was taken in August by the 56-cell [[cloverleaf interchange]]. Additionally, an [[Inflection|inflected]] version of professor which also has 46 cells appeared naturally in February 2019.<ref name="post70058" /> | ||
== | A {{gliders|8}} synthesis of the professor was found in June {{year|2023}},<ref name="j4404830724" /> improving over a {{gliders|9}} synthesis found several years earlier. | ||
== Variants == | |||
A number of variants are possible, depending on the alignment of the two halves and the position of the blocks: | |||
{{EmbedViewer | |||
|pname = professorisomers | |||
|viewerconfig = #C [[ THUMBSIZE 3 ZOOM 15 WIDTH 1200 HEIGHT 400 COLOR LABEL Black ]] | |||
#C [[ LABEL 4 -3 8 "cis-mirrored" ]] | |||
#C [[ LABEL 20 -3 8 "trans-mirrored" ]] | |||
#C [[ LABEL 36 -3 8 "shift-mirrored" ]] | |||
#C [[ LABEL 51 -3 8 "cis-rotated" ]] | |||
#C [[ LABEL 67 -3 8 "trans-rotated" ]] | |||
|position = center | |||
|caption = A collection of various professor isomers | |||
|style = width:300px; | |||
}} | |||
== See also == | |||
* [[Omnibus]] | |||
* [[Cthulhu]] | * [[Cthulhu]] | ||
==External links== | == References == | ||
{{LinkCatagolue|xs46_69b88bb8b96z69d11dd1d96}} | <references> | ||
<ref name="j4404830724">{{CiteCatagolueJob|job=4404830724|date=June 2, 2023}}</ref> | |||
<ref name="post33066">{{LinkForumThread | |||
|format = ref | |||
|p = 33066 | |||
|title = Re: Soup search results | |||
|author = gmc_nxtman | |||
|date = July 9, 2016 | |||
}}</ref> | |||
<ref name="post70058">{{LinkForumThread | |||
|format = ref | |||
|p = 70058 | |||
|title = Re: Soup search results | |||
|author = alphazelf | |||
|date = February 7, 2019 | |||
}}</ref> | |||
</references> | |||
== External links == | |||
* {{LinkCatagolue|xs46_69b88bb8b96z69d11dd1d96|patternname=Cis-mirrored professor}} | |||
{{ | {{natural}} | ||
__NOTOC__ | |||
Latest revision as of 15:24, 18 January 2026
| Professor | |||||||||
| View static image | |||||||||
| Pattern type | Strict still life | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 46 | ||||||||
| Bounding box | 9 × 11 | ||||||||
| Static symmetry | -c (D2_+1) | ||||||||
| Discovered by | Adam P. Goucher | ||||||||
| Year of discovery | 2016 | ||||||||
| |||||||||
| |||||||||
| |||||||||
| |||||||||
Professor is a 46-bit still life consisting of two large islands (resembling a long4 clips) partially stabilizing each other and further stabilized by two blocks acting as induction coils.
The cis-mirrored variant of this still life occurred naturally from an asymmetric soup on July 9, 2016,[1] in a haul submitted to Catagolue by Adam P. Goucher. It was formerly the largest still life to appear naturally, until its title was taken in August by the 56-cell cloverleaf interchange. Additionally, an inflected version of professor which also has 46 cells appeared naturally in February 2019.[2]
A 8-glider synthesis of the professor was found in June 2023,[3] improving over a 9-glider synthesis found several years earlier.
Variants
A number of variants are possible, depending on the alignment of the two halves and the position of the blocks:
| A collection of various professor isomers (click above to open LifeViewer) RLE: here Plaintext: here |
See also
References
- ↑ gmc_nxtman (July 9, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ alphazelf (February 7, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#4404830724) (June 2, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.