# Tetration Forum

Full Version: Negative, Fractional, and Complex Hyperoperations
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Is there a way to continue the patterns we see within the natural numbers of current hyper-operations (Hyper-1, Hyper-2, Hyper-3, Hyper-4, ect...) or at least prove that we cannot extend the value of the operation to fractional numbers? E.g. Hyper-1/2. Negative numbers? E.g. Hyper-(-2) Or even imaginary numbers? E.g. Hyper-3i.
They need not be defined, but are these operations technically there, just without practical use? Or are our names for the hyper-operations strictly for listing and naming purposes, with no way to derive meaning from such a number?
Could a fractional, or negative hyper-operation represent an operator we have already defined? E.g. Hyper-(-2)= Division, or Hyper-1/2 = Division?
Comments on the controversy of Zeration are also encouraged.
Thanks!
$s$-rank hyperoperations have meaning as long as we can iterate $s$ times a function $\Sigma$ defined in the set of the binary functions over the naturals numbers (or defined over a set of binary functions.)

let me explain why.

There are many differente Hyperoperations sequences, end they are all defined in a different way:

we start with an operation $*$ and we obtain its successor operation $*'$ applying a procedure $\Sigma$ (usually a recursive one).

$\Sigma(*)=*'$

So every Hyperoperation sequence is obtained applying that recursive procedure $\Sigma$ to a base operation $*$ (aka the first step of the sequence)

$*_0:=*$
$*_1:=\Sigma(*_0)$
$*_2:=\Sigma(\Sigma(*_0))$ and so on

or in a formal way

$*_0:=*$
$*_{n+1}:=\Sigma(*_n)$

That is the same as

$*_{n}:=\Sigma^{\circ n}(*_{0})$

so if we can extend the iteration of $\Sigma^{\circ n}$ from $n \in \mathbb{N}$ to the real-complex numbers the work is done.

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I'm not sure but I think that bo198214(Henrik Trappmann) had this idea in 2008 http://math.eretrandre.org/tetrationforu...l+function

With his idea we can reduce the problem of real-rank hyperoperations to an iteration problem

Later this idea was better developed by JmsNxn (2011) with the concept of "meta-superfunctions"

http://math.eretrandre.org/tetrationforu...hp?tid=708

I'm still working on his point of view but there is a lot of work to do...