Related Clues:

• E=mc2, say -- quite a different case of omission
• Math term that uses all five vowels exactly once
• Unusual quote in a line in a maths book?
• Quiet on a train for one of those making connection from mathematical class
• Newton's second law, essentially
• Extraordinary antique holds old correspondence
• The Pythagorean theorem, for one
• Situation where many factors need consideration
• Eccentric quiet about a feasible formula
• A boring broadcast on quiet times is often part of this formula
• Mathematical statement butchered in a quote
• Aid in some problem-solving
• What's old in phony antique? Solve that!
• “=” statement
• Correction to compensate for an error