lexicon.txt

exm for Experiments with MATLAB (by Cleve Moler in 2008), 这本书是关于MATLAB的教材

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   The importance of this larger blinker puffer (and others like it), is
   that the engine which produces the blinker output is only p4.  The
   blinker row produced by the puffer can easily be ignited, and burns
   cleanly with a speed of 2c/3.  When the burning catches up to the
   engine, it causes a {phase change} in the puffer.  This fact allows
   p8 blinker puffers to be used to construct rakes of all periods which
   are large multiples of four.

:blinkers bit pole: (p2)  Found by Robert Wainwright, June 1977.
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:blinker ship:  A {growing spaceship} in which the wick consists of
   a line of {blinker}s.  An example by Paul Schick based on his
   {Schick engine} is shown below.  Here the front part is p12 and
   moves at c/2, while the back part is p26 and moves at 6c/13.  Every
   156 generations 13 blinkers are created and 12 are destroyed, so the
   wick becomes one blinker longer.
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:block: (p1)  The most common {still life}.
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:blockade: (p1)  A common formation of four blocks.  The final form
   of {lumps of muck}.
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:block and dock: (p1)
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:block and glider: (stabilizes at time 106)
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:blocker: (p8)  Found by Robert Wainwright.  See also {filter}.
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:block on big table: = {block and dock}

:block on table: (p1)
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:block pusher:  A pattern emitting streams of {glider}s which can
   repeatedly push a block further away.  This can be used as part of a
   {sliding block memory}.
     The following pattern, in which three gliders push a block one cell
   diagonally, is an example of how a block pusher works.
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:blom: (stabilizes at time 23314)  The following {methuselah}, found by
   Dean Hickerson in July 2002.
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:blonk:  A {block} or a {blinker}.  This term is mainly used in the
   context of {sparse Life} and was coined by Rich Schroeppel in
   September 1992.

:blonker: (p6)  The following {oscillator}, found by Nicolay Beluchenko
   in April 2004.
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:boat: (p1)  The only 5-cell {still life}.
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:boat-bit:  A binary digit represented by the presence of a
   {boat} next to a {snake} (or other suitable object, such as
   an {aircraft carrier}).  The bit can be toggled by a {glider}
   travelling along a certain path.  A correctly timed glider on a
   crossing path can detect whether the transition was from 1 to 0
   (in which case the crossing glider is deleted) or from 0 to 1 (in
   which case it passes unharmed).  Three gliders therefore suffice for
   a non-destructive read.  The mechanisms involved are shown in the
   diagram below.  Here the bit is shown in state 0.  It is about to
   be set to 1 and then switched back to 0 again.  The first crossing
   glider will survive, but the second will be destroyed.  (In January
   1997 David Bell found a method of reading the bit while setting it
   to 0.  A {MWSS} is fired at the boat-bit.  If it is already 0 then
   the MWSS passes unharmed, but if it is 1 then the boat and the MWSS
   are destroyed and, with the help of an {eater1}, converted into a
   glider which travels back along exactly the same path that is used
   by the gliders that toggle the boat-bit.)
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:boat maker: (c p4 fuse)
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:boat on boat: = {boat-tie}

:boat-ship-tie: = {ship tie boat}

:boatstretcher:  See {tubstretcher}.

:boat-tie: (p1)  A 10-cell {still life} consisting of two {boat}s placed
   tip-to-tip.  The name is a pun on "bow tie".
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:boojum reflector: (p1)  Dave Greene's name for the following
   {reflector} which he found in April 2001, and which is currently
   the smallest known {stable} reflector.
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:bookend:  The following {induction coil}.  It is generation 1 of
   {century}.
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:bookends: (p1)
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:boss: (p4)  Found by Dave Buckingham, 1972.
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:bottle: (p8)  Found by Achim Flammenkamp in August 1994.  The name is
   a back-formation from {ship in a bottle}.
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:bounding box:  The smallest rectangular array of cells that contains
   the whole of a given pattern.  For {oscillator}s and {gun}s this
   usually is meant to include all {phase}s of the pattern, but
   excludes, in the case of guns, the outgoing stream(s).

:bow tie: = {boat-tie}

:brain: (c/3 orthogonally, p3)  Found by David Bell, May 1992.
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:breeder:  Any pattern whose {population} grows at a quadratic rate,
   although it is usual to exclude {spacefiller}s.  It is easy to see
   that this is the fastest possible growth rate.
     The term is also sometimes used to mean specifically the breeder
   created by Bill Gosper's group at MIT, which was the first known
   pattern exhibiting superlinear growth.
     There are four basic types of breeder, known as MMM, MMS, MSM and
   SMM (where M=moving and S=stationary).  Typically an MMM breeder is a
   {rake} {puffer}, an MMS breeder is a puffer producing puffers which
   produce stationary objects ({still life}s and/or {oscillator}s),
   an MSM breeder is a {gun} puffer and an SMM breeder is a rake gun.
   There are, however, less obvious variants of these types.  The
   original breeder was of type MSM (a p64 puffer puffing p30 glider
   guns).
     The known breeder with the smallest initial population is the
   {metacatacryst}.

:bridge:  A term used in naming certain {still life}s (and the {stator}
   part of certain {oscillator}s).  It indicates that the object
   consists of two smaller objects joined edge to edge, as in
   {snake bridge snake}.

:broken lines:  A pattern constructed by Dean Hickerson in May 2005
   which produces complex broken lines of gliders and blocks.

:broth: = {soup}

:BTC: = {billiard table configuration}

:B track:  A {track} for {B-heptomino}es.  The term is more-or-less
   synonymous with {Herschel track}, since a B-heptomino becomes a
   Herschel plus a block in twenty generations.

:buckaroo:  A {queen bee shuttle} stabilized at one end by an eater
   in such a way that it can turn a glider, as shown below.  This was
   found by Dave Buckingham in the 1970s.  The name is due to Bill
   Gosper.
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:bullet heptomino:  Generation 1 of the {T-tetromino}.
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:bun:  The following {induction coil}.  By itself this is a common
   {predecessor} of the {honey farm}.  See also {cis-mirrored R-bee}.
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:bunnies: (stabilizes at time 17332)  This is a {parent} of {rabbits}
   and was found independently by Robert Wainwright and Andrew
   Trevorrow.
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:burloaf: = {loaf}

:burloaferimeter: (p7)  Found by Dave Buckingham in 1972.  See also
   {airforce}.
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