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The trienn (also called triennet by Aarex Tiaokhiao[1]) is equal to \(\{9,9,9\}\) or \(9\{9\}9\) in BEAF or 9 undecated to 9.[2] This is the ninth Ackermann number.

Etymology

The name of this number is based on Greek prefixes tri- (three) and ennea- (nine), meaning that there are 3 9's in the array.

Sources

  1. Tiaokhiao, AarexAarex's Array Notation. Retrieved December 2013.
  2. Pointless Gigantic List of Numbers - Part 3. Retrieved February 16, 2015.

See also

Tritri series: tritri · tritet · tripent · trisept · tridecal · grand tridecal
Tetratri series: tetratri · supertet · general(plex)
Pentatri series: pentatri · superpent · pentadecal(plex)
Hexatri series: hexatri · superhex · hexadecal(plex)
Heptatri series: heptatri · supersept · heptadecal
Iteral series: superoct · octadecal · superenn · ennadecal · iteral · ultatri
Dupertri series: dupertri · duperdecal · truperdecal · quadruperdecal
Latri series: latri · emperal(plex) · hyperal(plex) · admiral
Dutritri series: dutritri · dutridecal
Dimentri series: dimentri · dulatri · trilatri · trimentri
Triakulus series: triakulus · tridecatrix
Big boowa series: big boowa · great big boowa · grand boowa
Tiaokhiao's extensions: trihex · trioct · triennet · triundecal · tridodecal · tritriplex · tritriplexian · grand tritri · tetrapent · tetrahex · grand tetratri · octatri · enneatri · decatri · undecatri · dodecatri