Cis-rotated bookend is a 14-cell strict still life consisting of two mutually stabilising bookends. It is one of six ways in which two bookends can be arranged to create a still life, and one of the five which have two separate islands.
This specific arrangement is named cis-rotated due to the two inducting faces being skewed from each other (hence rotated, as skewing forbids mirror symmetry), and the "denser" parts of each island are close to the outside (hence cis).
Cis-rotated bookend is the fiftieth most common still life in Achim Flammenkamp's census, being less common than trans-loaf with tail but more common than trans-block on long hook.[1] It is also the fifty-fifth most common object on Adam P. Goucher's Catagolue.[2]
All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
See also
References
External links
