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.
Vespula vulgaris. Vespula vulgaris, known as the common wasp, is a wasp found in various regions of the world including the United Kingdom, Germany, India, China, New Zealand, and Australia. It is sometimes known as the European wasp; this name is also used for the species Vespula germanica, which is also known as the German wasp.