Language of Proof (Edexcel IAL Maths)

Spec point — 1.1

Language of proof

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

Worked Example