Origins

We don’t know when the symbol as such appeared. Probably very long ago. The triangle is a popular symbol in itself, and three points naturally present themselves as its symbol / representation. If we look at other triangular symbols, such as the triquetra1 (from Latin tri – three, and quetrus – equipped with a horn, thus three-horned, originally meaning triangle) or triskelion2, the triple spiral, tripod, or cyclic group \(C_3\) (e.g., \(ZZ_3\)), we easily reach Neolithic times.

Triquetra on a Norwegian coin minted during the reign of Harald Hardrada (ruled 1046–1066). Notice the ∴ on the reverse side.

Triquetra on a Norwegian coin minted during the reign of Harald Hardrada (ruled 1046–1066). Notice the ∴ on the reverse side.

Modern Usage

U+2234 is the UTF-8 codepoint bearing the name “Therefore”. It was added among mathematical operators (section “Mathematical Operators”) in version 1.1 in 1993. Johann Rahn is considered its creator and first user5:

Page 53 of Johann Rahn’s treatise Teutche Algebra published in 1659.

Page 53 of Johann Rahn’s treatise Teutche Algebra published in 1659.

Rahn used it in place of the word therefore. A trivial use in mathematics might look like this:

\[ \begin{aligned} x + 1 = 10 \\ ∴ x = 9 \end{aligned} \]

In his 1659 work, he still freely alternates between ∴ and ∵. However, in its English edition of 1668, he almost exclusively uses ∴ to indicate the derivation of mathematical proof. In the 18th century, the symbol was used quite freely, with cases where it simply denoted an unknown (like today’s \(x\)). In the 19th century, it was standardized to its original use.

Similar Symbols

The symbol ∴ is truly simple graphically, so it’s no wonder that there are several very similar typographic symbols:

  • ∵ – used in place of the word because
  • ஃ – is a character in the Tamil script denoting a special sound of the language – āytam6.
  • ⁂ – either a typographic symbol indicating minor changes in text – meant to draw attention. Sometimes also used to separate sections in text. The symbol is also used in meteorology to indicate light snowfall.
  • ⛬ – a graphically almost identical symbol used by the Japanese geographic service to mark significant historical objects on maps (such as excavations, burial grounds, etc.).
  • ɔ: – a typographically similar symbol used by Norwegian and Danish typographers as an abbreviation for viz.7

In text typed on a computer/typewriter, ∴ is often replaced with :. or .·..

∴ and Freemasons

The history of the use of ∴ in Freemasonry is not entirely clear. The first use for abbreviating a word or name appears 8 in the list of the La Sincerité lodge in Besançon (France) from 1764. This suggests it was used earlier. The “official” establishment of its use is considered to be a circular from Grand Orient de France9 dated August 12, 1774, where the name of the Grand Orient was consistently abbreviated as G∴ O∴ de France and informed other lodges about new premises. Other authors, e.g., F. Chapuis10 claim that the symbol was used earlier, albeit rotated11.

The period of introducing the symbol overlaps with the French Revolution. And the very motto of Freemasonry liberté, égalité, fraternité12 intertwined with the revolution itself, changes in social order, and is still the motto of France today. It is therefore possible that during this time there arose a need for a simple symbol that would connect Freemasons of different faiths and origins.

There is also a kreuzer minted in 1773 in Frankfurt am Main, which placed ∴ in a prominent position in the shining Delta13.

Common Usage

It is standardly used to abbreviate words, names, titles, etc. For example:

  • F∴ – Frère (Brother), in the Czech environment B∴
  • FF∴ – Frères (Brothers), in the Czech environment BB∴

Symbolic Meaning

It seems that the general attitude is that there is none. At least according to the Encyclopedia of Freemasonry:

Three points in a triangular form (∴) are placed after letters in a Masonic document to indicate that such letters are the initials of a Masonic title or of a technical word in Freemasonry, as G∴M∴ for Grand Master, or G∴L∴ for Grand Lodge. It is not a symbol, but simply a mark of abbreviation. The attempt, therefore, to trace it to the Hebrew three yods [ייי], a sign of the Tetragrammaton, or any other ancient symbol, is futile. […] it is probable that the idea was suggested by the sacred character of the number three as a Masonic number, and these three dots might refer to the position of the three officers in a French Lodge.

— San Pedro Masons14

I have not been able to discover information about whether the mathematical meaning of ∴ was known and had any impact on the use of the symbol in Freemasonry. However, I found it a shame to stop here when the symbol offers us three main parts – 3, dots, and triangle.

3

The number 3 in Freemasonry symbolizes many key aspects, including morality, equality, justice. It is the basis for many rituals and symbols that are an integral part of Masonic tradition and philosophy. It symbolizes stability between body, mind, and soul (microcosm); heaven, earth, and underworld (macrocosm); … Divine trinities are also popular – Father-Son-Spirit, Jupiter-Juno-Minerva, Osiris-Isis-Horus, Trimurti (Brahma, Vishnu, Shiva).

Where two represents duality, often conflicting, three brings harmony1516. Three often appears in architecture/design, such as the rule of thirds. Most people have trichromatic vision (RGB). There are often three sections in storytelling (setup, confrontation, resolution).

  • 3 are the Masonic degrees – Apprentice, Fellow Craft, Master17. The Apprentice is 3 years old.
  • Three Great Lights – the Volume of Sacred Law, the Square, and the Compasses.
  • Three Lesser Lights – Wisdom, Strength, and Beauty.
  • Three immovable jewels of the lodge – the rough ashlar, the perfect ashlar, the trestle board.
  • Three movable jewels of the lodge – the plumb, the level, the square.
  • Three steps to Solomon’s Temple.
  • Three barred windows of Solomon’s Temple. Sometimes there are also three doors.
  • Three principal officers of the lodge / three gavels – the Worshipful Master, the Senior Warden, and the Junior Warden18.
  • Three tools of the Apprentice – hammer, chisel, 24-inch gauge.

(Equilateral) Triangle

The triangle is also a very popular symbol. Just because of the simplicity of the shape. It appears in many Masonic and non-Masonic symbols and properties. For instance:

  • The Shining Delta, the symbol of the Great Architect of the Universe
  • Solomon’s Seal / Star of David
  • Masonic square

We’ve already mentioned Pythagoras in the context of the number three. Pythagoras is also credited with discovering intervals in music and inventing the monochord19.20 The Pythagoreans, of course, noticed that some numbers can be arranged (i.e., objects in a number corresponding to the number) into an equilateral triangle. We call these triangular numbers (\(T_n\)).

The first six triangular numbers. Where \(T_n=n(n+1)/2=binom(n+1, 2)\).

The first six triangular numbers. Where \(T_n=n(n+1)/2=binom(n+1, 2)\).

So our ∴ actually corresponds to \(T_2\). Another interesting one is \(T_4\), which has its own name – tetractys (τετρακτύς). The Pythagoreans used the tetractys to build and explain the entire world. Their sum gives the magical ten (\(1+2+3+4\)), which for the Pythagoreans signified divine perfection. From the tetractys, one can also derive the basic harmonic ratios: 1:2 – octave, 2:3 – fifth, and 3:4 – fourth (and if we extended to higher \(n\), other intervals as well)21.

Conclusion

Symbols are actually shortcuts22 that, besides their conventional and apparent meaning, also have specific connotations (assigned meanings). They are abstractions, shortcuts, visual forms of thought that carry significant emotional charge. We, humans, are responsible for the meaning and interpretation of symbols (e.g., the change in connotation of the swastika).

Symbols help create and transmit stories. And stories are the basic building blocks of human societies and individual lives. It is therefore natural that psychologists pay great attention to them. Symbols are used in religious systems, social structures, political groupings, in science, in business, in personal life, etc. Symbols can be used to communicate universally and also to evoke emotions – and these can be misused for manipulation. I consider the moment when they begin to represent dogma to be critical. Generally, when they are used to suppress critical thinking. An example might be numerology, which uses (natural) numbers, assigns them its own meaning, and ignores the difference between correlation and causality. Or any other example where an inward look is replaced by an external enemy23.

Symbols are not an anachronism, just look 🔎 at modern emojis in electronic communication24.

Jung describes that various symbols that recur in human history may refer, among other things, to archetypes and thus evoke in us tendencies toward certain emotional or imaginative contents. Symbols then tend to resonate even with our (collective) unconscious:

I am of the opinion that the unification of rational and irrational truth does not occur so much in art as much more in the symbol. The symbol has in its nature two sides, rational (reasonable) and irrational (unreasonable).

— C.G. Jung (25, p. 73)

For me, a symbol is primarily about an invitation to reflection. It’s not just about their generally accepted meaning. The main thing is to explore, and perhaps sometimes understand, what they mean to me personally.


  1. Typical triquetra.

    Typical triquetra.

     ↩︎

  2. Triskelion in the form of Archimedes spirals, reconstruction of a symbol from the prehistoric tomb in Newgrange, Ireland.

    Triskelion in the form of Archimedes spirals, reconstruction of a symbol from the prehistoric tomb in Newgrange, Ireland.

     ↩︎

  3. He collaborated on the treatise with English mathematician John Pell, and it’s unclear which of them came up with the symbols. ↩︎

  4. The obelus originally served as a proofreading (also editorial) mark. It was supposedly first used by Aristarchus to mark disputed passages in Homer. Later it appeared mainly in the gospels to mark conflicting, disputed passages. Variants with one or two dots ⨪ ÷ were often used. The obelus has survived to modern times in the symbols ÷ † ⁒ ⸓. ↩︎

  5. Johann Rahn was a Swiss mathematician (10.03.1622 – 25.05.1676). Besides the symbol ∴, he is also credited with the first3 use of the obelus4 as a division symbol ÷.]. ↩︎

  6. āytam is related to the Sanskrit visarga, which is denoted by ः. ↩︎

  7. Which I long thought was simply from “to see”. However, it is an abbreviation of the Latin videlicet. Which is itself an abbreviation of videre licet, meaning something like it is permitted to see. And I wonder if this isn’t the etymology of that Czech word “vidět” (to see)… ↩︎

  8. Marie Ragon, Orthodoxie maçonnique (Masonic Orthodoxy). 1853. ↩︎

  9. GODF was founded on 24.06.1773. In 1799 it absorbed older lodges, so sometimes its reach is stated to go back to 1728 or 1733. ↩︎

  10. L. Chapuis, Bulletin des Ateliers supérieurs (Bulletin of Higher Workshops). 1937. ↩︎

  11. Symbol in the records of the “Sincerity” lodge from the Orient in Besançon.

    Symbol in the records of the “Sincerity” lodge from the Orient in Besançon.

     ↩︎

  12. Liberty, equality, fraternity. The French lawyer Maximilien Robespierre is considered the author of the slogan. ↩︎

  13. One kreuzer coin from 1773. Frankfurt am Main.

    One kreuzer coin from 1773. Frankfurt am Main.

     ↩︎

  14. San Pedro Masons, Three Dots In A Triangle: A Venerable Masonic Mark. 2020. https://sanpedromasons.org/2020/07/freemasonry-and-the-50th-anniversary-of-the-lunar-landing-copy/external link  ↩︎

  15. Pythagoras (who else) considered three to be the ideal number, symbolizing harmony, wisdom, and understanding. ↩︎

  16. However, we assign meaning in interpretation. Three can also be ruin – three little girls, a love triangle… ↩︎

  17. The Scottish Rite has, for good measure, 33. ↩︎

  18. the Worshipful Master, the Senior Warden, and the Junior Warden. ↩︎

  19. The monochord consists of a single string supported at two points. Where one of the points is movable. ↩︎

  20. And Copilot is pushing this completion of the paragraph to me :) And thus the discovery of harmony. And harmony is the basic building block of music. And music is the basic building block of the universe. And the universe is the basic building block of everything. And thus the triangle is the basic building block of everything. ↩︎

  21. Roel Hollander, Music & Geometry – Part 1 – Intervals & Scales. 2024. https://roelsworld.eu/blog-music/music-geometry-intervals-scales/external link  ↩︎

  22. Logos are not symbols. They are invented marks (e.g., company logo). A brand is a trademark that has a name in the market and weight with customers (e.g., if I’m buying a car, I’m buying a product, if I’m buying a Mercedes, Škoda, Adidas, etc., I’m buying a brand). ↩︎

  23. The mysteries of faith are degraded if they are made into an object of affirmation and negation, when in reality they should be an object of contemplation.

    Simone Weil

     ↩︎
  24. Don’t believe it? Which movie is this? ⚓🚢󰙃󱁷👋💏🌊🧊💦🆘󰐻🌊󰯆💔. ↩︎

  25. Carl Gustav Jung, The Red Book – Liber Novus. 2013, Portál ↩︎

Citation

For attribution, please cite this work as

Antonín Král (2025). U+2234 -- The Story of the Symbol ∴. bobek.cz. https://www.bobek.cz/therefore/

BibTeX citation

@misc{
  title = "U+2234 -- The Story of the Symbol ∴",
  author = "Antonín Král",
  year = "2025",
  journal = "bobek.cz",
  note = "https://www.bobek.cz/therefore/"
}