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Quipu is a Quechua word meaning 'knot' or 'to knot'. [16] The terms quipu and khipu are simply spelling variations on the same word.Quipu is the traditional spelling based on the Spanish orthography, while khipu reflects the recent Quechuan and Aymaran spelling shift.
Reprint-Version: 1963–1979. The Ashley Book of Knots is an encyclopedia of knots written and illustrated by the American sailor and artist Clifford W. Ashley.First published in 1944, it was the culmination of over 11 years of work.
Solomon's knot carving in Almenno San Bartolomeo (Italy) Ancient Roman mosaic in Aquileia (Italy) Decorative Solomon's knot. Solomon's knot (Latin: sigillum Salomonis, lit. 'Solomon's seal') is a traditional decorative motif used since ancient times, and found in many cultures.
A constrictor knot prepared for tightening using two metal rods and marlinespike hitches. The constrictor knot is appropriate for situations where secure temporary or semi-permanent binding is needed. Made with small-stuff it is especially effective, as the binding force is concentrated over a smaller area. When tying over soft material such as ...
A framed knot is the extension of a tame knot to an embedding of the solid torus D 2 × S 1 in S 3. The framing of the knot is the linking number of the image of the ribbon I × S 1 with the knot. A framed knot can be seen as the embedded ribbon and the framing is the (signed) number of twists. [8] This definition generalizes to an analogous ...
The knot sum of oriented knots is commutative and associative. A knot is prime if it is non-trivial and cannot be written as the knot sum of two non-trivial knots. A knot that can be written as such a sum is composite. There is a prime decomposition for knots, analogous to prime and composite numbers (Schubert 1949). For oriented knots, this ...
This knot was typically used as a method of capital punishment. The pull on the knot at end of the gallows often resulted in a cervical fracture.Another method intended to result in the mass of the knot crushing closed (occluding) neck arteries, causing cessation of brain circulation, which was not always rapid.
The bowline knot is thought to have been first mentioned in John Smith's 1627 work A Sea Grammar under the name Boling knot. Smith considered the knot to be strong and secure, saying, "The Boling knot is also so firmly made and fastened by the bridles into the cringles of the sails, they will break, or the sail split before it will slip."
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