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.
T he Moors were the Muslim people from North Africa who lived in the Iberia Peninsula, and they were the archenemies of the catholic Portuguese (and Spanish). They were a threat for a number of centuries. This expression, however, has nothing to do with war. On the contrary, it is related to love.