
What are fractals?
Let's begin by looking at an interesting plant from a geometric point of view:

Photo 1. A Fern.
The three photographs, D, E and F, are three views of the same fern. Photo E shows a
close-up view of photo D, and F is a close-up of E. If we look at the overall
appearance of the fern in D, we can see that it is made up of one central
stem from which green leaves with pointed tips emerge. If we zoom in on
one of the leaves (E), we see that the pattern of central stem and band
after band of green leaves is repeated. Finally, if we zoom in on
one of the leaves (F), we can observe the same pattern, and so on ad infinitum.
The property, whereby the geometric form of the fern is
independent of the scale on which it is seen, is
called self-similarity. The geometric shapes that it forms
are called fractals.
Other examples of fractals appear in nature:

Photo 2. The fractal geometry of nature.
Photo A shows a bolt of lightning, B a tree and C,
the human circulatory system, taken from an early drawing.
The concept of fractals has been introduced so that we may understand
the geometrical form of the poem presented here below, called insula smaragdina
(hereafter called insula). As can be seen on the homepage,
the insula is a visual poem, one that "expresses its
spiritual content through words laid out according to
metrical laws". In this particular case, the laws will
actually be "mathematical" rather than "metrical" since the
words of the work are written in accordance with fractal
geometry. It is therefore a visual poem in that the words
are laid out according to this geometry.
All of these images have been scanned from "Mundo Cientifico" ("World of Science"), no. 201, May 1999, p. 58
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Koch Island
The words of the poem are laid out in such a way that they form a
fractal called Koch Island (hence the name insula, which in Latin
means island). The Koch Island is part of a simple union of fractals
called "Lindenmayer Systems":

Figure 1. Koch Island (3rd iteration)
Koch's island and other fractals can be explored through the
following software (click here for installation instructions):
Fractal visualization software (soon in english)
It is important to note the self-similar structure of the Koch Island. To examine
it more closely we can look at it in different scales to see if the
resulting structures bear any similarities. First of all, let's sketch the Koch
Island to the fourth iteration. Let's imagine that we have a camera and that we
photograph one part of it at maximum, at medium, and at minimum zoom:
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Figure 2. Minimum zoom |
Figure 3. Medium zoom |
Figure 4. Minimum zoom |
Then we can carry out a succession of superimpositions between these figures to demonstrate their similarities:
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Figure 5. Superimposition of figure 3 onto 2 |
Figure 6. Superimposition of figure 4 onto 2 |
Figure 7. Superimposition of figure 4 onto 3 |
When we superimpose figure 3 onto 2 (by changing the size of 3),
figure 3 almost follows the perfectly-drawn rectangles of figure 2,
but does not do so perfectly.
By superimposing figure 4 onto 2 (again adapting the
size of figure 4), we note a similar result to the previous
one: figure 4 also almost follows the perfectly-drawn
rectangles of 2, and does so a little better than 3,
but it still does not follow it perfectly.
When we also superimpose figure 4 onto 3 (and change the size of
4), we note that they are practically, but not absolutely
identical. Figure 4 follows 3 meticulously, but there are tiny
deviations and does not follow the other figure perfectly.
The Koch Island thus demonstrates its strong self-simlar
structures: 3 is similar to 2; 4 is similar to 3, and so forth
on to infinity.
The Island's self-similarity is characteristic of fractal forms.
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The text of the poem
Let us run quickly over the words written according
to the geometry of the Koch Island, the words that
form the insula smaragdina poem.
To see the poem and generate different versions of it, use the
Poem generation software (soon in english)
(click here for installation instructions).
Different aspects of the poem can be seen more clearly by clicking on the gallery.
Given the difficulty of faithfully reproducing the poems generated by the programme here, let's look at a small section of one of them:

Figure 8. A section of poem
Reading the text in a clockwise direction, the following sentence can be isolated:
"QUODESTINFERIUSESTSICUTQUODESTSUPERIUSET
QUODESTSUPERIUSESTSICUTQUODESTINFERIUSET"
We can, in turn, separate it into words that form the maxim:
"QUOD EST INFERIUS EST SICUT QUOD EST SUPERIUS
ET
QUOD EST SUPERIUS EST SICUT QUOD EST INFERIUS
ET"
If the poem is read patiently, the reader sees that the first
sentence is repeated again and again. During this reading,
reader sees that the last word of one sentence, "ET", is followed by the
first word, "QUOD", of the next. The method is to read until we find
ourselves back at the original starting point. We begin to read again
and so on, ad infinitum. The following diagram outlines the reading
procedure (click on the image to enlarge):

Figure 9. How the text is repeated to infinity
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Final reflections
Finally, there is no one single interpretation of the poem. In
other words, a definitive version of the poem does not exist. Thus
anyone who wishes to may create his or her own version by using
the insula computer programme. As such, each individual possesses
the means to construct his or her own poem, and to print it (or not).
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