Set notation
What Set notation means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.
Definitions of Set notation
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Set notation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: WJEC
Written with set-builder braces and membership symbols, using intersection for a bounded single interval and union for disjoint intervals.
Formal language and symbols used to define collections of objects, including curly brackets and the element symbol (∈).
A way of expressing solutions, such as {x : x < −1} ∪ {x : x > 3}, used alongside 'and' and 'or'.
Topics that use Set notation
- B: Algebra and functions (AQA A-Level)
- Overarching theme 1: Mathematical argument, language and proof (Pearson Edexcel A-Level)
- Algebra and Functions (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- Asymptotes
- Completing the square
- critical values
- direct proportion
- Discriminant
- Domain
- Factor theorem
- Function
Using Set notation in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge