Pre-block: Difference between revisions
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|bx = 2 | |bx = 2 | ||
|by = 2 | |by = 2 | ||
|symmetry = D2_x | |||
|discoverer = John Conway | |discoverer = John Conway | ||
|discoveryear = 1969 | |discoveryear = 1969 | ||
|rulemin = B3/S23 | |rulemin = B3/S23 | ||
|rulemax = B345678/S012345678 | |rulemax = B345678/S012345678 | ||
|isorulemin = B3a/S2ae3a | |isorulemin = B3a/S2ae3a | ||
|isorulemax = B2-a345678/S012345678 | |isorulemax = B2-a345678/S012345678 | ||
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|rle = true | |rle = true | ||
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'''Pre-block''' (or '''latent block'''), a [[triomino]], is a common [[parent]] of the [[block]]. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as [[boat]], [[ship]], [[aircraft carrier]], [[block and glider]] or [[snake]]; a mirrored pair comprise one phase of a [[beacon]]. | '''Pre-block''' (or '''latent block'''), a [[triomino]], is a common [[parent]] of the [[block]]. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as [[boat]], [[ship]], [[aircraft carrier]], [[block and glider]] or [[snake]]; a mirrored pair comprise one phase of a [[beacon]]. | ||
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The pre-block is similar to the [[tub]], [[boat]], [[beehive]] and such in the sense that it can be augmented with items like tails, as in [[eater 1]] and [[integral sign]]. | The pre-block is similar to the [[tub]], [[boat]], [[beehive]] and such in the sense that it can be augmented with items like tails, as in [[eater 1]] and [[integral sign]]. | ||
In terms of its {{cells|3}} | In terms of its {{cells|3|text=3 cells}}, it is the smallest [[induction coil]]. | ||
A glider hitting a pre-block can produce a [[LWSS]] or [[MWSS]]; this is detailed in [[pre-pre-block]]. | A glider hitting a pre-block can produce a [[LWSS]] or [[MWSS]]; this is detailed in [[pre-pre-block]]. | ||
== | == Extensibility == | ||
Pre-block can be infinitely extended, as illustrated by the following: | Pre-block can be infinitely [[Extensibility|extended]], as illustrated by the following: | ||
<gallery widths="120px" style="text-align:center;"> | |||
Prepreblock2.png|[[Pre-pre-block]] | |||
Preprepreblock.png|[[Pre-pre-pre-block]] | |||
Pre4block.png|Pre{{sup|4}}-block | |||
Pre5block.png|Pre{{sup|5}}-block | |||
</gallery> | |||
== See also == | |||
* [[Grin]] | |||
== | == External links == | ||
* | * {{LinkLexicon|lex_p.htm#preblock}} | ||
[[Category:Polyominoes]] | |||
Latest revision as of 21:09, 21 August 2024
| Pre-block | |||||||||
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| Pattern type | Still life component | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 3 | ||||||||
| Bounding box | 2 × 2 | ||||||||
| Static symmetry | D2_x | ||||||||
| Discovered by | John Conway | ||||||||
| Year of discovery | 1969 | ||||||||
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Pre-block (or latent block), a triomino, is a common parent of the block. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as boat, ship, aircraft carrier, block and glider or snake; a mirrored pair comprise one phase of a beacon.
The pre-block is similar to the tub, boat, beehive and such in the sense that it can be augmented with items like tails, as in eater 1 and integral sign.
In terms of its 3 cells, it is the smallest induction coil.
A glider hitting a pre-block can produce a LWSS or MWSS; this is detailed in pre-pre-block.
Extensibility
Pre-block can be infinitely extended, as illustrated by the following:
-
-
-
Pre4-block -
Pre5-block
See also
External links
- Pre-block at the Life Lexicon