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| {{Glossary}}
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| A '''unit cell''' is a subset (usually rectangular or square) of the Life plane that tiles over the plane, along with a fixed number of distinct patterns, with each tile assuming one of the patterns, such that it simulates a [[cellular automaton]], possibly itself. A '''unit Life cell''' is a unit cell that simulates the [[Conway's Game of Life|Game of Life]]. To avoid single [[cell]]s themselves being considered unit cells, the size of a unit cell must be greater than 1x1.
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| The [[p5760 unit Life cell|first unit Life cell]] was constructed by [[David Bell]] in [[:Category:Patterns found in 1996|1996]].<ref>{{cite web|url=http://radicaleye.com/lifepage/patterns/unitcell/ucdesc.html|title=The Unit Life Cell|author=Paul Callahan|date=March 1, 1996}}</ref> It employs standard glider logic to determine whether or not a [[glider]] should be present. The two states differ by a single glider. In 2004, Jared Prince modified David Bell's unit Life cell to support two (and therefore multiple) layers of Life universes, coined "[[deep cell]]".<ref>{{cite web|url=http://www.physicsforums.com/showthread.php?t=45061|title=Game of Life Deep Cell|author=Jared Prince|date=September 27, 2004}}</ref>
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| More recently, a unit cell was constructed that simulates any [[Life-like cellular automaton]].<ref>{{cite web|url=http://otcametapixel.blogspot.com/|title=OTCAmetapixel}}</ref> Designed to run quickly in [[HashLife]], it has the advantage of having two states that are clearly distinct when zoomed out.
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| ==References==
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| <references />
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| ==External Links==
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| {{LinkWeisstein|UnitLifeCell.html|patternname=Unit Life cell}}
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| {{LinkLexicon|lex_u.htm#unitlifecell}}
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