The regenerative loop is a loop-like motif found in some stablecatalysts that, when perturbed in a certain way, hits a block to produce a grin and then restores itself.
Pi splitter
Pi splitter is a representative elementaryconverter with a regenerative loop motif. It was originally found by Ivan Fomichev with Bellman in August 2013[1] and subsequently reduced by Martin Grant. It is a constellation consisting of a block and an unnamed 27-cell still life. Its name originates from the fact that a pi-heptomino can be split into two gliders in a reaction shown to the left, with systematic label PNE−6T40_SE−6T40.
Later this catalyst is generalized to a replacement catalyst for the tub when it is turned into a certain block predecessor. Shown to the right below are two example catalyses; the first was used in both a period-36 honey farm hassler and an alternative G4 receiver, while the second was used in a variant of p124 lumps of muck hassler. However, both oscillators can be reduced with other catalysts.
The regenerative loop can also be activated by other reactions not starting from a (failed) tub reaction, and in this case, the smallest working object with the motif is an unnamed 14-cell still life. By inducing the birth of a cell, the nine becomes a bookend and proceeds.
The first panel below shows how the catalyst can be hassled by a spark, the second shows a random active region perturbed by the catalyst, and the third shows a glidereater that is recorded in Dean Hickerson's 1998 eater stamp collection and has a recovery time of 10 ticks.[2]