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The duperdecal or iteralplex is equal to {10,iteral (1) 2} in BEAF,[1] or iteral & 10, using the array of operator. The term was coined by Jonathan Bowers.

### Approximations and exact values in other notations

Notation Approximation
Bird's array notation $$\{10,3,2 [2] 2\}$$ (exactly equal)
Cascading-E notation $$10\#\text{^}\#10\#3$$
Hyperfactorial array notation $$3![2,1,1,2]$$
Fast-growing hierarchy $$f_{\omega^{\omega}}(f_{\omega^8}(10))$$
Hardy hierarchy $$H_{\omega^{\omega^{\omega}}+{\omega^{\omega^{8}}}}(10)$$

### Sources

1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.

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