Schubert (1949) showed that every knot can be uniquely decomposed (up to the order in which the decomposition is performed) as a knot sum of a class of knots known as prime knots, which cannot themselves be further decomposed (Livingston 1993, p. 5; Adams 1994, pp.
The Moors were Muslim inhabitants of the Maghreb, the Iberian Peninsula, Sicily, and Malta during the Middle Ages.
Although the Moors came to be identified as Muslim, the name Moor pre-dates Islam. It derives from the small Numidian Kingdom of Maure of the 3rd century BCE in what is now northern central and western part of Algeria and a part of northern Morocco. [9] The name was applied to people of the entire region.