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.
Famous Landmarks found in England. Please note: We have mainly written about England, as that is the country within the UK where our students live. We would be very happy for schools and visitors to send us information we can add to our website on Wales and Scotland.t is the most famous prehistoric monument in Britain and is situated on Salisbury Plain in the county of Wiltshire. People began building Stonehenge about 5,000 years ago, dragging each stone into place.