How do I represent such a transformation?

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Let's say I have a 2d rectangle defined by $ [0,x_0] \times [0,y_0]$. Now lets say I cut out the middle rectangle $[\frac{1}{3} x_0, \frac{2}{3} x_0] \times [\frac{1}{3} y_0, \frac{2}{3} y_0]$. Now suppose I take the hyperreal extension of this rectangle. I then "fill" back up the middle rectangle. I increase the rectangle to $ [0,x_0 + \varepsilon] \times [0,y_0 + \varepsilon]$ where $\varepsilon \in \mathbb{R}_{\varepsilon}$ (the infinitesimals). I then cut out the analagous middle rectangle of this square. I then proceed to take the standard part of this figure. Has the standard square gotten any bigger? If I repeat this process $ N \in \mathbb{N}^*$ number of times, what can be said about the standard part? Will I see entire figure continuously increase in measure? Will I see nothing at all?

The goal here is to make something like this process that is continuous. I want to be able to define something that increases the overall measure of the figure while still preserving the structure of the rectangle that has been cut out.

Any thoughts?

I essentially just want to be able to increase the measure, while preserving structure. Need more exposure on this question...

Offering 300 rep bounty for proper answer.

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As far as looking for hyperreal approaches to constructing the carpet, which is how I understood your idea, I would suggest looking first at hyperreal approaches to constructing nowhere differentiable functions. This was dealt recently in a paper by McGaffey here: http://arxiv.org/abs/1306.6900