# Paul Callahan

From LifeWiki

Paul Callahan | |

Born | Unknown |
---|---|

Residence | United States |

Nationality | Unknown |

Institutions | Unknown |

Alma mater | Johns Hopkins University |

**Paul Callahan** is a Life enthusiast.

He expanded David Buckingham's Herschel conduit mechanisms, building the first known stable glider reflectors. He also carried out computer searches to find some of the smallest patterns exhibiting infinite growth, including the smallest possible one cell thick infinite growth pattern.

## Patterns found by Paul Callahan

## 4## B## C## F |
## F cont.## G## H |
## H cont.## L## P |

## References

- "Life Credits". Mark D. Niemiec. Retrieved on June 12, 2009.

## External links

- Life page of Paul Callahan
- Paul Callahan at the Mathematics Genealogy Project