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  2. 62 knot - Wikipedia

    en.wikipedia.org/wiki/62_knot

    In knot theory, the 6 2 knot is one of three prime knots with crossing number six, the others being the stevedore knot and the 6 3 knot.This knot is sometimes referred to as the Miller Institute knot, [1] because it appears in the logo [2] of the Miller Institute for Basic Research in Science at the University of California, Berkeley.

  3. Knot theory - Wikipedia

    en.wikipedia.org/wiki/Knot_theory

    An example is 1*2 −3 2. The 1* denotes the only 1-vertex basic polyhedron. The 2 −3 2 is a sequence describing the continued fraction associated to a rational tangle. One inserts this tangle at the vertex of the basic polyhedron 1*. A more complicated example is 8*3.1.2 0.1.1.1.1.1 Here again 8* refers to a basic polyhedron with 8 vertices.

  4. Knot polynomial - Wikipedia

    en.wikipedia.org/wiki/Knot_polynomial

    Many knot polynomials are computed using skein relations, which allow one to change the different crossings of a knot to get simpler knots.. In the mathematical field of knot theory, a knot polynomial is a knot invariant in the form of a polynomial whose coefficients encode some of the properties of a given knot.

  5. Butterfly bend - Wikipedia

    en.wikipedia.org/wiki/Butterfly_bend

    It is the analogous bend form of the butterfly loop, [1] in that it is the butterfly loop with the loop cut. [2] The observation that the butterfly loop is secure enough to isolate a worn or damaged section of rope within the loop indicated that the bend form of the knot would be similarly secure.

  6. A2 Key - Wikipedia

    en.wikipedia.org/wiki/A2_Key

    A2 Key (previously known as the Key English Test (KET) and Cambridge English: Key) was developed through trials conducted between 1991 and 1994. [ 2 ] It was created to offer students a basic qualification in English and provide the first step for those wishing to progress towards higher level qualifications, such as B1 Preliminary , B2 First ...