James Graham Ballard (born November 18, 1930) is a Britishnovelist remarkable for the range of genres of his novels - science fiction, modernistic art novel, and historical setting. A great many of his writings are about dystopias.
... is zero and it is impossible to divide by it.)
The symbol
<math>\pm \sqrt {b^2-4ac}</math>
in the formula should be understood as "either of thos ...