°The arithmetic
operator consisting of repeated
exponentiation, by analogy with exponentiation being repeated multiplication and multiplication being repeated addition,
ba denoting
a to the power of
a to the power of ... to the power of
a, in which
a appears
b times. Notation:
ba,
or''.
synonyms:
exponential map, hyper4, hyperpower, power tower
more»
, super-exponentiation