Exponentiation is a fundamental way to
It is easy to define for
ordinary numbers :
just as 4 x 3 is 4 added to itself three times (4 + 4 + 4 = 12),
is 4 multiplied by itself 3 times
(4 x 4 x 4 = 64).
But for transcendental numbers this
definition of exponentiation is more
what could it mean to multiply
something by itself pi times , for
That is because pi  itself cannot precisely be defined, therefore pi
multiplied by pi  is also not precisely defined.