The bishop of which city would sign himself by his Christian name plus the word Sarum?
Old Sarum which was in use in 1239. The 14th-century Bishop Wyvil was the first to describe himself as "episcopus Sarum". The addition of 'old' to the name distinguished it from New Sarum, the formal name of the present-day city of Salisbury until 2009. The hilltop at Old Sarum shows evidence of Neolithic settlement as early as 3000 BC. There is evidence that early hunters and, later, farming communities occupied the site. A protective hill fort was constructed by the local inhabitants around 400 BC during the British Iron Age by creating enormous banks and ditches surrounding the hill. The hillfort is
Plus-minus sign be rewritten as ""x" ± ("y" − "z")" to avoid confusion, but cases such as the trigonometric identity are most neatly written using the "∓" sign. The trigonometric equation above thus represents the two equations: but "not" because the signs are exclusively alternating. Another example is which represents two equations. The plus-minus sign resembles the Chinese characters and , whereas the minus-plus sign resembles . Plus-minus sign The plus-minus sign (±) is a mathematical symbol with multiple meanings. The sign is normally pronounced "plus or minus" or "plus-minus". A version of the sign, including also the French word "ou" ("or")