Related Clues:

• European Union's first to congratulate top mathematician
• Philosopher retraces Argosy path
• His argument's well known to be three-sided
• Sign written the wrong way by top mathematician
• Old mathematician in university, one beset by poor grades
• Greek philosopher/mathematician
• Mathematician's graph, say, to change
• Greek mathematician c. three hundred BC
• Mathematician from London campus in Muslim festival
• Guide for those to whom geometry is all Greek
• Mathematician vaguely toys with a graph
• Helpful sign written the wrong way by top mathematician
• Greek geometrician of Alexandria
• Poor clue one initially developed for an old mathematician
• Gosh, a party was thrown for old mathematician