Another Apelles was the founder of a Gnostic sect in the 2nd century; Apelles (theologian)[?].Apelles was a renowned painter of ancient Greece. Of Ionian origin, he became a student at Sicyon under Pamphilus[?]. At the court of Macedon he painted Phillip II and the young Alexander the Great with such success that he became the recognised court painter. His painting of Alexander holding a thunderbolt was highly regarded. He painted various portraits and mythological figures, none of which have survived to the present day.
... \sqrt {b^2-4ac}</math>
in the formula should be understood as "either of those element(s) of the field whose square equals b2 - 4ac". In some fields, ...