Related Clues

• Checks for errors
• Trial copies
• Print trials
• Reads for errors
• Editor's copies
• They end 'Q.E.D.'
• Trial prints
• Geometry class exercises
• Demo photos
• First impressions may be convincing
• Academics accepting old work of mathematicians
• Preliminary prints
• Checks for typos
• Galleys
• Trial prints from negatives
• Checks for mistakes
• Activates, as yeast
• Puts sourdough in the fridge overnight, say
• Geometry exercises
• Mathematician's output