I have discovered that Yin-Yang and Golden Ratio are different representations of one and the same metaphysical principle. The metaphysical principle of our interest is Unity Within Duality which states the complementary character of conflicting tendencies. This is of course similar to the Hegelian trinity in his interpretation of history: Thesis-Antithesis-Synthesis.

After giving a short account of Yin-Yang and Golden Ratio I proceed to prove their equivalence. Since after a year of research I have found no one else who has discovered this equivalence I stick a copyright notice at the end of the article just for the publication purposes in case the finding turns out to be of significance.

Yin-Yang and Golden Ratio are the two representations of the principle that maximally opposing tendencies, or aspects, complement one another to form a unity: The former represents it geometrically and the latter represents it numerically.

Yin-Yang in Chinese philosophy is the geometrical expression of the following concept: The apparently opposing and contradictory tendencies complement one another; being interconnected they add up to form a unity. In the Yin-Yang symbol a whole circle is divided into two maximally opposing aspects. The two aspects enjoy maximal opposition both in color and orientation: The color of one cut is the negation of the color of the other; and the orientation of one is the inverse of the orientation of the other.

Notice that the two opposing sides have the same shape; they are the opposites of one another only in the attributes color and orientation. In other words, one side is the negation and inversion of the other side. But this cannot be done with just any shape; not every shape can be inverted and then added to itself to form a perfect circle which represents unity.

Golden Ratio is a number in mathematics; it has the numerical value of 1.61803398875…. When the ratio of two quantities is this number we say that they are in golden ratio. This number has huge significance in mathematics because it is the corner stone of spiral geometry which is observed everywhere in nature. It is also the limit of the Fibonacci Sequence. In fact when the ratio of two lengths is the golden ratio they have an inherent tendency to make up harmonious and beautiful structures.

It is time to see how Yin-Yang and Golden Ratio are equivalent to one another, both being the representations of one principle.

We saw that Yin-Yang represents the idea that maximally opposing aspects add up to form a unity; each aspect is both the negation and the inversion of the other aspect. Numerically speaking, one being the inverse of the negative of the other. Let us try to represent this idea numerically, using number instead of shape: We need a number that when maximally opposed to itself, namely first negated and then inverted, can be added to itself to form a unity which is represented by number 1.

We don’t yet know if such number exists, but it will soon be proved that it actually does. First remember that by negation of a number of course we mean its negative, -2 being the negative of 2. By inversion we mean the inverse of the number, 1/2 being the inverse of 2; thus, the inverse of the negative of 2 is -1/2; but notice that when we add 2 and -1/2 we get 3/2 and not 1. We are after a number that gives us 1.

Let us call our desired number x and try to write down the concept behind Yin-Yang in the language of numbers and see if such number exists: We have x as our number; negate it to get -x; invert the negation to get -1/x. To express Yin-Yang is to add up these two numbers and have them equal 1. Thus, the algebraic equivalent of Yin-Yang would be the equation [x+(-1/x)]=1 which can be simplified as the following:

**X – (1/X) = 1**

This already looks like Yin-Yang :). For those with mathematics background this equation should blow their minds; it is none but the infamous equation that is the very definition of the **Golden Ratio**: Golden Ratio is the exact solution, and the only solution, of this quadratic equation. You will soon see that the second solution is just the negative of the inverse of the Golden Ratio, its maximally opposing complement which we call the *Golden Complement*. Let’s call this equation, the algebraic form of Yin-Yang, the *Golden Equation* since its solutions are the Golden Ratio and the Golden Complement; thus, this equation has two solutions in real numbers:

**X – 1/X = 1 The Golden Equation (Equivalent of Yin-Yang in Algebra)**

**First Solution: X**_{1 }= 1.61803398875… The Golden Ratio

**Second Solution: X**_{2} = -0.61803398875… The Golden Complement

**X**_{1 }+ X_{2} = 1 The Golden Equation in terms of its two complementary solutions

The first solution is the *Golden Ratio* and the second solution is interestingly the inverse of the negative of the first solution, namely the Golden Complement. See that the two solutions corresponding to the two complementary aspects of Yin-Yang add up to unity, hence completing the Yin-Yang equivalent in algebra. Notice that the Golden Complement has the exact same decimals as the Golden Ratio itself which is the reason why the decimals cancel out in the Golden Equation, hence leading to unity.

We saw that there actually exists a unique number whose inverse of its negation can be added to it to become unity, the number 1, hence expressing the Yin-Yang principle in the realm of numbers, and this unique number is none but the Golden Ratio, the solution of the Golden Equation. Thus one side of Yin-Yang corresponds to the Golden Ratio and the other side corresponds to its maximally opposing counterpart, the negative of its inverse which is the Golden Complement, and the two adding up to unity by definition. Only the Golden Ratio has this property, and one can see as we showed above that the principle behind Yin-Yang, leading to the Golden Equation in algebra, is the very definition of the Golden Ratio.

**Digression: **

{Notice that the two solutions of the Golden Equation, which correspond to the two maximally opposing aspects of Yin-Yang, have these two interesting properties:

**X**_{1} + X_{2} = 1 X_{1} × X_{2} = -1

If these two solutions, the Golden Ratio and the Golden Complement, are considered to be the diagonal elements, or eigenvalues, of a 2×2 matrix called the *Golden Matrix* **G**, then G is an orthogonal matrix with determinant -1 and trace 1, hence:

**Det(G) + Tr(G) = 0**

Which is only an interesting observation besides our main point.}

**End of Digression**

Therefore, the principle that the maximally opposing tendencies complement one another and form a unity is represented geometrically as Yin-Yang and algebraically as the Golden Equation X-1/X=1 whose two solutions, corresponding to the two aspects in Yin-Yang, are the Golden Ratio and the Golden Complement. We saw that of all numbers one and only one, the Golden Ratio, has this property. More precisely, the Golden Equation **X-1/X=1** is the algebraic equivalent of Yin-Yang from which the Golden Ratio is extracted.

Yin-Yang is the Golden Equation in geometry. Golden Equation is Yin-Yang in algebra.

This equivalence between Yin-Yang and Golden Equation which I discovered in the fall of 2013 has blown my mind to this day. Who could guess that the Golden Ratio is Yin-Yang in numbers while Yin-Yang is the Golden Ratio in geometry! Fascinating.

*[Note for the mathematician: In constructing the Golden Equation, the algebraic equivalent of Yin-Yang, I assumed a bijection from plane shapes to real numbers, hence defining the equation over R, the field of real numbers. Naturally a bijection from the inverse and the negative of a shape would fall onto the inverse and negative of numbers. Thus, in constructing the bijection from Yin-Yang to real numbers the only proper way of translating maximal opposition, namely both negation and inversion, would be to use both the additive inverse and the multiplicative inverse of a number, the only possible ways of defining *opposites* among real numbers, hence the field properties of the *Commutative Division Ring* **R**. In other words, the only way to translate the relation between the two opposing aspects of Yin-Yang is to relate a real number to the multiplicative inverse of its additive inverse, hence mapping the two different operations present in Yin-Yang, namely the spatial inversion and color-negation. It is seen that the only number whose multiplicative inverse of its additive inverse can be added to itself to become unity is the Golden Ratio.]

Copyright** ©** Tomaj Javidtash and NOEMAYA, 12/30/2014

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