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The reef knot, or square knot, is an ancient and simple binding knot used to secure a rope or line around an object. It is sometimes also referred to as a Hercules knot or Heracles knot . The knot is formed by tying a left-handed overhand knot between two ends, instead of around one end, and then a right-handed overhand knot via the same ...
The square knot is amphichiral, meaning that it is indistinguishable from its own mirror image. The crossing number of a square knot is six, which is the smallest possible crossing number for a composite knot. The Alexander polynomial of the square knot is = (+),
A square knot is another name for a reef knot. Square knot may also refer to: Square knot, a particular use of a reef knot formed over two other strands, used in macramé; Square knot, another name for a cross knot in Chinese knotting; Square knot (mathematics), a composite knot obtained by taking the connected sum of a trefoil knot with its ...
The reef knot can capsize if one of its standing ends is pulled.. A knot that has capsized or spilled has deformed into a different structure. Although capsizing is sometimes the result of incorrect tying or misuse, it can also be done purposefully in certain cases to strengthen the knot (see the carrick bend [4]) or to untie a seized knot which would otherwise be difficult to release (see ...
Bowen knot (heraldic knot) – not a true knot (an unknot), a continuous loop of rope laid out as an upright square shape with loops at each of the four corners; Bowline – forms a fixed loop at the end of a rope; Boling knot (archaic term for the Bowline) – forms a fixed loop at the end of a rope; Bowline bend
7 1 knot, septafoil knot, (7,2)-torus knot - a prime knot with crossing number seven, which can be arranged as a {7/2} star polygon ; 7 4 knot, "endless knot" 8 18 knot, "carrick mat" 10 161 /10 162, known as the Perko pair; this was a single knot listed twice in Dale Rolfsen's knot table; the duplication was discovered by Kenneth Perko
The primary knots of macramé are the square (or reef knot) and forms of "hitching": various combinations of half hitches. It was long crafted by sailors, especially in elaborate or ornamental knotting forms, to cover anything from knife handles to bottles to parts of ships.
The granny knot is a binding knot, used to secure a rope or line around an object. It is considered inferior to the reef knot (square knot), which it superficially resembles. Neither of these knots should be used as a bend knot for attaching two ropes together. The granny knot is also called the false, lubber's, calf, and booby knot.