Language of Proof (OCR A Level Maths: Pure)

What is proof?

• Proof is a series of logical steps which show whether a result is true or not for a set of specified numbers
  • e.g. All integers, all even numbers etc

Notation in proof

 

• LHS and RHS are standard abbreviations for left-hand side and right-hand side
• Integers are used frequently in the language of proof
  • The set of integers is denoted by ℤ

Techniques for proof