The 3-tuple (70, 55, 9) as a set

An n-tuple (x1,...,xn) is an ordered list of n sets. It can be constructed in several ways. A popular definition is the original set x1 for n=1 and the ordered pair ((x1,...,xn-1),xn) otherwise.

Klick on the ordered pair ( 70, 55 ) or the natural number 9 to see how it may be defined as a set.

(70, 55, 9) = ( ( 70, 55 ), 9 )

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