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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 ...
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 ...
This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
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
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Knot board [] on Elbe 1 (ship, 1965). A knot is an intentional complication in cordage [1] which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a hitch fastens a rope to another object; a bend fastens two ends of a rope to each another; a loop knot is any knot creating a loop; and splice denotes any multi ...
These two notions of knot equivalence agree exactly about which knots are equivalent: Two knots that are equivalent under the orientation-preserving homeomorphism definition are also equivalent under the ambient isotopy definition, because any orientation-preserving homeomorphisms of to itself is the final stage of an ambient isotopy starting ...
A three-dimensional model of a figure-eight knot.The figure-eight knot is a prime knot and has an Alexander–Briggs notation of 4 1.. Topology (from the Greek words τόπος, 'place, location', and λόγος, 'study') is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling ...