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0 1 knot/Unknot - a simple un-knotted closed loop; 3 1 knot/Trefoil knot - (2,3)-torus knot, the two loose ends of a common overhand knot joined together; 4 1 knot/Figure-eight knot (mathematics) - a prime knot with a crossing number four
A knot in R 3 (or alternatively in the 3-sphere, S 3), can be projected onto a plane R 2 (respectively a sphere S 2).This projection is almost always regular, meaning that it is injective everywhere, except at a finite number of crossing points, which are the projections of only two points of the knot, and these points are not collinear.
The Dowker–Thistlethwaite notation for this labelling is the sequence: 6, −12, 2, 8, −4, −10. A knot diagram has more than one possible Dowker notation, and there is a well-understood ambiguity when reconstructing a knot from a Dowker–Thistlethwaite notation.
Zutah played for Tarkwa-based side Medeama SC from 2013 to 2015. He made his debut in 2013 during the 2013–14 Ghana Premier League season under Hans van der Pluijm. [4] He played in the Ghana Premier League and remained as a key member of the club within that period helping the club to the win the Ghanaian FA Cup in 2013 and 2015.
By way of example, the unknot has crossing number zero, the trefoil knot three and the figure-eight knot four. There are no other knots with a crossing number this low, and just two knots have crossing number five, but the number of knots with a particular crossing number increases rapidly as the crossing number increases.
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.
The knot (/ n ɒ t /) is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). [1] [2] The ISO standard symbol for the knot is kn. [3]
The symbol # is known variously in English-speaking regions as the number sign, [1] hash, [2] or pound sign. [3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔.