Hello Marcoen,
Thank you very much for your question about «... a single eidos, represented by a simple mathematical object and representing the fundamental physical principles.»
In my essay FQXI 2012 I gave essential (ontological) justification of the absolute form of existence of matter (absolute states): absolute rest, absolute motion and absolute becoming, as well as supporting such a representation in the form of simple mathematical objects.
http://www.fqxi.org/community/forum/topic/1362
I build on the basis of ontological constracting - "Absolute generating structure." That is a mathematics and physics as the main sign systems, am getting a hard ontological foundation. Those thus essentially (ontologically) detailed support two main sign systems - mathematics and physics. I solve this problem essential (ontological) justification of knowledge in general.
Three mathematical object (equilateral triangles), I group the invariants that represent three of the absolute state of matter, symmetrically to the center and get another ancient mathematical object called the Enneagram. But I interpret this object is not in the spirit of Gurdjieff, but ontologically as a mathematical representants absolute state of matter. The principle of symmetry of a lower order than the principle of the trinity, which I call Superprinsiple. In the world we observe symmetry and asymmetry, continuity and discontinuity, generation and conservation, the sources and sinks of matter. This object - Eidos-represents the "absolute idea" of Hegel and that mathematical object that wanted to construct Edmund Husserl: "Only to the extent, to which in case of idealization, the general content of spatio-temporal sphere is apodictically taken into account, which is invariant in all imaginable variations, ideal formation may arise, that will be clear in any future for all generations and in such form will be transferable by the tradition and reproducible in identical intersubjective sense "(«Origin of Geometry ").
As for the formula, the formula may not represent the world as a whole. Formula - it clippings being of the world as a whole. Figuratively speaking, the formula - it is « a knife" by which the intellect "calculate" the world and its parts. The world as a whole can be represented as a character in the form of a simple mathematical object .
I have already cited the words of Alexander Zenkin from the article "Science counterrevolution in mathematics": «The truth should be drawn with the help of the cognitive computer visualization technology and should be presented to" an unlimited circle "of spectators in the form of color-musical cognitive images of its immanent essence. "
http://www.ccas.ru/alexzen/papers/ng-02/contr_rev.htm
In the russian version more clearly and distinctly: «The truth should be drawn and should be presented to "an unlimited circle" of spectators".
This means seeking the truth on the basis of the conceptual - figure synthesis of Kant's whose origins in the method of Plato and his "Platonic Solids".
Best regards,
Vladimir