This is a collection of symbols for comparative semiotic analysis. Some symbols are cultural, other are natural, or mathematical, in any case, some are conventions which serve as universal language, other are representation, and they preserve the shape of nature.

Unicursal hexagram

The unicursal hexagram is a hexagram or six-pointed star that can be traced or drawn unicursally, in one continuous line rather than by two overlaid triangles. The hexagram can also be depicted inside a circle with the points touching it.

Aleister's unicursal hexagram

Aleister Crowley's adaptation of the unicursal hexagram placed a five-petaled rose (symbolizing the Divine), in the center, the symbol as a whole making eleven (five petals of the rose plus six points of the hexagram).

Schrödinger's cat

Schrödinger's cat is a thought experiment, usually described as a paradox, devised by Austrian physicist Erwin Schrödinger in 1935. It illustrates what he saw as the problem of the Copenhagen interpretation of quantum mechanics applied to everyday objects. The scenario presents a cat that might be alive or dead, depending on an earlier random event. Although the original "experiment" was imaginary, similar principles have been researched and used in practical applications. The Cat paradox is also often featured in theoretical discussions of the interpretation of quantum mechanics.

Chaos star

The Symbol of Chaos originates from Michael Moorcock's Eternal Champion stories. In them, the Symbol of Chaos comprises eight arrows in a radial pattern. In contrast, the symbol of Law is a single upright arrow. It is also called the Arms of Chaos, the Arrows of Chaos, the Chaos Star or the Symbol of Eight.

Moorcock contends that he conceived this symbol while writing the first Elric of Melniboné stories in the early 1960s. It was subsequently adopted into the pop-cultural mainstream, turning up in such diverse places as modern occult traditions and role-playing games.

Chaos sphere

The chaosphere is a popular symbol of chaos magic.
Chaos magic is a school of the modern magical tradition which emphasizes the pragmatic use of belief systems and the creation of new and unorthodox methods.

The Penrose triangle

The Penrose triangle, also known as the Penrose tribar, is an impossible object. It was first created by the Swedish artist Oscar Reutersvärd in 1934. The mathematician Roger Penrose independently devised and popularised it in the 1950s, describing it as "impossibility in its purest form". It is featured prominently in the works of artist M. C. Escher, whose earlier depictions of impossible objects partly inspired it.

The holy table

Plate I from John Dee's LIBER LXXXIV.
The Skryer obtained from certain Angels a series of seven talismans.1 These, grouped around the Holy Twelvefold Table, similarly obtained, were part of the furniture of the Holy Table, as shown in Plate I., opposite.

Enochian alphabet

Plate IX from John Dee's LIBER LXXXIV, the Alphabet in which all this is written. It is the Alphabet of the Angelic Language. The invocations which we possess in that tongue follow in their due place.[It is called also Enochian, as these angels claimed to be those which conversedwith the “patriarch Enoch” of Jewish fable.]

John Dee's hieroglyph

Dee's glyph, whose meaning he explained in Monas Hieroglyphica.


In set theory, an ordinal number, or just ordinal, is the order type of a well-ordered set. They are usually identified with hereditary transitive sets. Ordinals are an extension of the natural numbers different from integers and from cardinals. Like other kinds of numbers, ordinals can be added, multiplied, and exponentiated. Each turn of the spiral represents one power of ω.

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