In mathematics, the root system for the simple Lie group G2 is in the form of a hexagram, with 6 long roots and 6 short roots.
A six-pointed star, like a regular hexagon, can be created using a compass and a straight edge:Make a circle of any size with the compass.
Without changing the radius of the compass, set its pivot on the circle's circumference, and find one of the two points where a new circle would intersect the first circle.
With the pivot on the last point found, similarly find a third point on the circumference, and repeat until six such points have been marked.
With a straight edge, join alternate points on the circumference to form two overlapping equilateral triangles.
It is possible that as a simple geometric shape, like for example the triangle, circle, or square, the hexagram has been created by various peoples with no connection to one another.
The hexagram is a mandala symbol called satkona yantra or sadkona yantra found on ancient South Indian Hindu temples. It symbolizes the nara-narayana, or perfect meditative state of balance achieved between Man and God, and if maintained, results in "moksha," or "nirvana" (release from the bounds of the earthly world and its material trappings).
Some researchers have theorized that the hexagram represents the astrological chart at the time of David's birth or anointment as king. The hexagram is also known as the "King's Star" in astrological circles.
In antique papyri, pentagrams, together with stars and other signs, are frequently found on amulets bearing the Jewish names of God, and used to guard against fever and other diseases. Curiously the hexagram is not found among these signs. In the Greek Magical Papyri (Wessely, l.c. pp. 31, 112) at Paris and London there are twenty-two signs side by side, and a circle with twelve signs, but neither a pentagram nor a hexagram.
Six pointed stars have also been found in cosmological diagrams in Hinduism, Buddhism, and Jainism. The reasons behind this symbol's common appearance in Indic religions and the West are unknown. One possibility is that they have a common origin. The other possibility is that artists and religious people from several cultures independently created the hexagram shape, which is a relatively simple geometric design.
Within Indic lore, the shape is generally understood to consist of two triangles—one pointed up and the other down—locked in harmonious embrace. The two components are called "Om" and the "Hrim" in Sanskrit, and symbolize man's position between earth and sky. The downward triangle symbolizes Shakti, the sacred embodiment of femininity, and the upward triangle symbolizes Shiva, or Agni Tattva, representing the focused aspects of masculinity. The mystical union of the two triangles represents Creation, occurring through the divine union of male and female. The two locked triangles are also known as 'Shanmukha'—the six-faced, representing the six faces of Shiva & Shakti's progeny Kartikeya. This symbol is also a part of several yantras and has deep significance in Hindu ritual worship and history.
In Buddhism, some old versions of the Bardo Thodol, also known as The "Tibetan Book of the Dead", contain a hexagram with a Swastika inside. It was made up by the publishers for this particular publication. In Tibetan, it is called the "origin of phenomenon" (chos-kyi 'byung-gnas). It is especially connected with Vajrayogini, and forms the center part of Her mandala. In reality, it is in three dimensions, not two, although it may be portrayed either way.
Many Western occultists associate this central chakra with the central sephirah, Tiphereth, in the kabbalistic tree of life. Christian kabbalists in particular associate this sephirah with love, healing, and knowledge.
The Shatkona is a symbol used in Hindu yantra that represents the union of both the male and feminine form. More specifically it is supposed to represent Purusha (the supreme being), and Prakriti (mother nature, or causal matter). Often this is represented as Shiva - Shakti.
The Shatkona is a hexagram and looks exactly like the Star of David.
In the endocrine system, Anahata is associated with the thymus gland, located in the chest. This gland produces T-cells, that combat disease, and bring equilibrium to the body. The functioning of the thymus is greatest before puberty and is impaired by the appearance of sex hormones in the blood stream from puberty onwards.
The Magen David is a generally recognized symbol of Judaism and Jewish identity and is also known colloquially as the Jewish Star or "Star of David." Its usage as a sign of Jewish identity began in the Middle Ages, though its religious usage began earlier, with the current earliest archeological evidence being a stone bearing the shield from the arch of a 3–4th century synagogue in the Galilee. A more enduring symbol of Judaism, the menorah, has been in use since about 1300 BC according to the Torah Exodus 25:31-40.
The hexagram may be found in some Churches and stained-glass windows. In Christianity it is sometimes called the star of creation. A very early example, noted by Nikolaus Pevsner, can be found in Winchester Cathedral, England in one of the canopies of the choir stalls, circa 1308.
In Orthodox Christian churches, for example in Balkan countries, hexagrams can be found more often than in Roman Catholic churches.
The Star of David is also used less prominently by The Church of Jesus Christ of Latter-day Saints, in the temples and in architecture. It symbolizes God reaching down to man and man reaching up to God, the union of Heaven and earth. It may also symbolize the Tribes of Israel and friendship and their affinity towards the Jewish people. Additionally, it is sometimes used to symbolize the quorum of the twelve apostles, as in Revelation 12, wherein the Church of God is symbolized by a woman wearing a crown of twelve stars. It is also sometimes used to symbolize the Big Dipper, which points to the North Star, a symbol of Jesus Christ.
A black star of David is used to identify the black population, in Africa or otherwise, with one of the Tribes of Israel.
The symbol is known in Arabic as نجمة داوود, Najmat Dāwūd (Star of David) or خاتم سليمان Khātem Sulaymān (Seal of Solomon), but "Seal of Solomon" may also refer to a pentagram or a species of plant.
In various places in the Qur'an, it is written that David and King Solomon (Arabic, Suliman or Sulayman) were prophets and kings and therefore they are revered figures by Muslims. The Medieval pre-Ottoman Hanafi Anatolian beyliks of the Karamanids and Jandarids used the star on their flag. The symbol also used on Hayreddin Barbarossa flag. Even today, the star can be found in mosques and on other Arabic and Islamic artifacts.
Professor Gershom Sholem theorizes that the "Star of David" originates in the writings of Aristotle, who used triangles in different positions to indicate the different basic elements. The superposed triangles thus represented combinations of those elements. From Aristotle's writings those symbols made their ways into early, pre-Muslim Arab literature.
In heraldry and vexillology, a hexagram is a fairly common charge employed, though it is rarely called by this name. In Germanic regions it is known simply as a "star." In English and French heraldry, however, the hexagram is known as a "mullet of six points," where mullet is a French term for a spur rowel which is shown with five pointed arms by default unless otherwise specified. In Albanian heraldry and vexillology, hexagram has been used since classical antiquity and it is commonly referred to as sixagram. Coa Kastrioti Family of the House of Kastrioti depicts the hexagram on a pile argent over the double headed eagle. A hexagram also appears on the Dardania Flag, proposed for Kosovo by the Democratic League of Kosovo.
The Star of David is used in the seal and the emblem of the Theosophical Society (founded in 1875). Although it is more pronounced, it is used along with other religious symbols. These include the Swastika, the Ankh, the Aum, and the Ouroboros. The star of David is also known as the Seal of Solomon that was its original name until around 50 years ago.
The hexagram, like the pentagram, was and is used in practices of the occult and ceremonial magic and is attributed to the 7 "old" planets outlined in astrology.
The six-pointed star is commonly used both as a talisman and for conjuring spirits and spiritual forces in diverse forms occult magic. In the book The History and Practice of Magic, Vol. 2, the six-pointed star is called the talisman of Saturn and it is also referred to as the Seal of Solomon. Details are given in this book on how to make these symbols and the materials to use.
Traditionally, the Hexagram can be seen as the combination of the four elements. Fire is symbolized as an upwards pointing triangle, while Air (its elemental opposite) is also an upwards pointing triangle, but with a horizontal line through its center. Water is symbolized as a downwards pointing triangle, while Earth (its elemental opposite) is also a downwards pointing triangle, but with a horizontal line through its center. When you combine the symbols of Fire and Water, a hexagram (six-pointed star) is created. The same follows for when you combine the symbols of Air and Earth. When you combine both hexagrams, you get the double-hexagram. Thus, a combination of the elements is created.
In Rosicrucian and Hermetic Magic, the seven Traditional Planets correspond with the angles and the center of the Hexagram as follows, in the same patterns as they appear on the Sephiroth and on the The Tree of Life. Saturn, although formally attributed to the Sephira of Binah, within this frame work nonetheless occupies the position of Daath.
"The interlacing triangles or deltas symbolize the union of the two principles or forces, the active and passive, male and female, pervading the universe ... The two triangles, one white and the other black, interlacing, typify the mingling of apparent opposites in nature, darkness and light, error and truth, ignorance and wisdom, evil and good, throughout human life." – Albert G. Mackey: Encyclopedia of Freemasonry
The hexagram is featured within and on the outside of many Masonic temples as a decoration. It may have been found within the structures of King Solomon's temple, from which Freemasons are inspired in their philosophies and studies. Like many other symbols in Freemasonry, the deciphering of the hexagram is non-dogmatic and left to the interpretation of the individual.A six-point interlocking triangles has been used for thousands of years as an indication a sword was made, and "proved," in the Damascus area of the Middle East. Still today, it is a required "proved" mark on all official UK and United States military swords though the blades themselves no longer come from the Middle East.
The Ulster Banner flag of Northern Ireland, used from 1953-1972. The six pointed star, representing the six counties that make up Northern Ireland. The star of the Ulster Banner is not the compound of two equilateral triangles. The intersection is not a regular hexagon.
A Flag used by rebels during the Whiskey Insurrection in South-Western Pennsylvania, 1794.
In Unicode, the "Star of David" symbol ✡ is U+2721.
There is a plant named Solomon's seal (Polygonatum multiflorum) in the lily family.
In alchemy, the two triangles represent the reconciliation of the opposites of fire and water. Non-Jewish Kabbalah (also called Christian or Hermetic Kabbalah) interprets the hexagram to mean the divine union of male and female energy, where the male is represented by the upper triangle and the female by the lower one. Moreover, it derives four triangular symbols from it (two triangles crossed like a capital letter A and two uncrossed) to represent the four elements: water, fire, air, and earth. This use of the symbol was used as an important plot point in Dan Brown's popular novel The Da Vinci Code and the Da Vinci Code film cites this as the origin of the star.
It was also used as a sign for quintessence, the fifth element.
In southern Germany the hexagram can be found as part of tavern anchors. It is symbol for the tapping of beer and sign of the brewer's guild. In German this is called "Bierstern" (beer star) or "Brauerstern" (brewer's star).
A six-point star is used as an identifying mark of the Folk Nation.
The main runways and taxiways of Heathrow Airport were arranged roughly in the shape of a hexagram.
A hexagram in a circle is incorporated prominently in the supports of Worthing railway station's platform 2 canopy (UK).
A hexagram appears on the Dardania Flag, proposed for Kosovo by the Democratic League of Kosovo.
An extremely large, free-standing wood hexagram stands in the central park of the Municipality of El Tejar, Guatemala. Additionally, every year at Christmastime the residents of El Tejar erect a giant fake Christmas tree in front of their municipal building, with a hexagram sitting at its peak.
The Indian sage and seer Sri Aurobindo used it—e.g. on the cover of his books—as a symbol of the aspiration of humanity calling to the Divine to descend into life (the triangle with the point at the top), and the descent of the Divine into the earth's atmosphere and all individuals in response to that calling (the triangle with the point at the bottom). (This was explained by the Mother, his spiritual partner in Her 14-volume Agenda and elsewhere by Sri Aurobindo in his writings.)
A strange storm on the north pole of Saturn appears to be roughly in the shape of a hexagram.
In Pokemon media, the hexagram is the symbol for psychic-powered pokemons.
Other hexagrams can be constructed as a continuous path.