Ectossolplex is equal to \(\lbrace 10,\text{ectossol} (6) 2 \rbrace\) in BEAF.[1] The term was coined by Jonathan Bowers.


The name of this number is based on suffix "-plex" and the number "ectossol".


Notation Approximation
Bird's array notation {10,ectossol[7]2} (exact)
Cascading-E notation E10#^#^#6
Fast-growing hierarchy \(f^2_{\omega^{\omega^6}}(10)\)
Hardy hierarchy \(H_{\omega^{\omega^{\omega^6}}\times 2}(10)\)


  1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.

See also

Jonathan Bowers' colossol series
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