English-Finnish translations for tetration

The arithmetic operator consisting of repeated exponentiation, by analogy with exponentiation being repeated multiplication and multiplication being repeated addition, ^''b''''a'denoting ''a'to the power of ''a'to the power of ... to the power of ''a'', in which ''a'appears ''b'times. Notation: ^''b''''a'', $a\uparrow\uparrow b$ ''or' $a\rightarrow b\rightarrow 2$

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