A massive number which is represented by the symbol

## How it's calculated

It all begins with nesting functions.

first we define a function f_{0} a being an index into a nesting function (in this case the addition, multiplication, exponentiation chain):

and so on.

Then define f_{1} as a nesting function of f_{0}:

Now you have a function that can output stupid big numbers with tiny inputs.

But we're not done.

We can define f_{2} as a nesting function of f_{1} and f_{3} as a nesting function of f_{2} as do this over and over again up to infinity.

And we're still not done.

We can define g_{0} as an index into the f functions:

Now we can do the same thing with the g functions as we did with the f functions.

And that's not all.

We can create another series h that does exactly the same thing to the g functions. And we can repeat this an infinite amount of times.

And we can index into the actual tiers of this sequence.

Let's stop here (we could keep nesting and indexing but for simplicity's sake let's stop here). Let's define TW(x) as an index into this system:

Now we can finally calculate Tweers (Massive) Number