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2. QALO - Wikipedia

   en.wikipedia.org/wiki/QALO

   QALO silicone rings are designed to be more comfortable and safer than traditional metal rings as they snap off if they get caught on something. [ 5 ] The rings are marketed towards active individuals [ 6 ] and those with professions that result in their metal band being a safety hazard like athletes, firefighters , police officers , mechanics ...

3. Knot theory - Wikipedia

   en.wikipedia.org/wiki/Knot_theory

   Examples of different knots including the trivial knot (top left) and the trefoil knot (below it) A knot diagram of the trefoil knot, the simplest non-trivial knot. In topology, knot theory is the study of mathematical knots.

4. List of mathematical knots and links - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical_knots...

   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 5 1 knot/ Cinquefoil knot , (5,2)-torus knot, Solomon's seal knot, pentafoil knot - a prime knot with crossing number five which can be arranged as a {5/2 ...

5. List of knot theory topics - Wikipedia

   en.wikipedia.org/wiki/List_of_knot_theory_topics

   Knot theory is the study of mathematical knots. While inspired by knots which appear in daily life in shoelaces and rope, a mathematician's knot differs in that the ends are joined so that it cannot be undone. In precise mathematical language, a knot is an embedding of a circle in 3-dimensional Euclidean space, R 3.

6. Link (knot theory) - Wikipedia

   en.wikipedia.org/wiki/Link_(knot_theory)

   The Borromean rings, a link with three components each equivalent to the unknot. In mathematical knot theory, a link is a collection of knots which do not intersect, but which may be linked (or knotted) together. A knot can be described as a link with one component. Links and knots are studied in a branch of mathematics called knot theory.

7. Knot (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Knot_(mathematics)

   A polygonal knot is a knot whose image in R 3 is the union of a finite set of line segments. [6] A tame knot is any knot equivalent to a polygonal knot. [6] [Note 2] Knots which are not tame are called wild, [7] and can have pathological behavior. [7] In knot theory and 3-manifold theory, often the adjective "tame" is omitted. Smooth knots, for ...