R-pentomino

English Noun es en geometry A particular five-square polyomino. en cellular automata The methuselah based on this polyomino that, in Conway's Game of Life, has a lifespan of 1,103 generations. en 1990-01-15 Paul Dietz Gosper's Algorithm for Life comp.theory.cell-automata https://groups.google.com/g/comp.theory.cell-automata/c/7Clnii1g8OU/m/7B-9RbinciwJ I came up with an implementation of an algorithm on my Sparcstation 1 that does all 1103 generations of the R-pentomino, including the gliders, in 1.3 seconds (no display), and runs o.....o. ..o...o. ..o..o.o .o.o.... (a pattern by Wainright recommended to me by Gosper) out to 10,000 generations in 45 seconds (again, without display). en 1990-06-08 Robert Herrell Life without bounds comp.theory.cell-automata https://groups.google.com/g/comp.theory.cell-automata/c/hR0sguZnRis/m/JW0cC7JvyX8J I've finisher debugging the code, and it works -- that is to say, its final configuration for the R-pentomino is the same as the one in my books. (It's my guess that the R-p will find any bug in any life program, no matter how obscure.) en 1996-11-19 Paul Callahan Glider reflector in Life comp.theory.cell-automata https://groups.google.com/g/comp.theory.cell-automata/c/6RXEdXs1t9Q/m/Q_QvfaHXKH4J This explosive collision is "perturbed" by the permanent parts of the reflector so that at generation 242, the destroyed block is restored, a glider is released in the reverse direction, an r-pentomino is produced some distance from the stage, and a beehive is left in an awkward position close to the block. Synonyms en F-pentomino