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The triquetra is often used artistically as a design element when Celtic knotwork is used, especially in association with the modern Celtic nations. The triquetra, also known as a "Irish Trinity Knot", is often found as a design element in popular Irish jewelry such as claddaghs and other wedding or engagement rings.
One very basic form of Celtic or pseudo-Celtic linear knotwork. Stone Celtic crosses, such as this, are a major source of knowledge regarding Celtic knot design. Carpet page from Lindisfarne Gospels, showing knotwork detail. Almost all of the folios of the Book of Kells contain small illuminations like this decorated initial.
Description: Triquetra interlaced with a circle (ribbons or pseudo-Celtic knotwork). This is a traditional Christian Trinitarian symbol, but similar signs are also sometimes used by new agers or neo-pagans (though more often in non-interlaced form, as in Zoso.svg, Triquetra on book cover.jpg, or Triquetra.jpg).
In his work titled Essays upon the Mathematics of Mordente: One Hundred and Sixty Articles against the Mathematicians and Philosophers of this Age (Prague: 1588), [2] Italian philosopher, cosmological theorist, and Hermetic occultist Giordano Bruno used the unicursal hexagram symbol to represent Figura Amoris ("figure of love") [2] part of the Hermetic trinity in his mathesis.
Late examples of the triple spiral symbols are found in Iron Age Europe, carved in rock in Castro Culture settlements in Galicia, Asturias, and Northern Portugal. The symbol took on new meaning to Irish Celtic Christians before the 5th century CE as a symbol of the Trinity. [citation needed]
A heraldic knot (referred to in heraldry as simply a knot) is a knot, unknot, or design incorporating a knot used in European heraldry. [1] While a given knot can be used on more than one family's achievement of arms , the family on whose coat the knot originated usually gives its name to the said knot (the exception being the Tristram knot ).
The first work of knot theory to include the Borromean rings was a catalog of knots and links compiled in 1876 by Peter Tait. [3] In recreational mathematics , the Borromean rings were popularized by Martin Gardner , who featured Seifert surfaces for the Borromean rings in his September 1961 " Mathematical Games " column in Scientific American ...
The term "Celtic Rite" is applied [1] to the various liturgical rites used in Celtic Christianity in Britain, Ireland and Brittany and the monasteries founded by St. Columbanus and Saint Catald in France, Germany, Switzerland, and Italy during the Early Middle Ages. The term is not meant to imply homogeneity; instead it is used to describe a ...