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Contemporary Mathematics

Key Terms

Contemporary MathematicsKey Terms

Key Terms

1.1 Basic Set Concepts

  • set
  • elements
  • well-defined set
  • empty set
  • roster method
  • finite set
  • infinite set
  • natural numbers
  • integer
  • set-builder notation
  • cardinality of a set
  • countably infinite
  • equal sets
  • equivalent sets

1.2 Subsets

  • subset
  • proper subset
  • equivalent subsets
  • exponential notation

1.3 Understanding Venn Diagrams

  • Venn diagram
  • universal set
  • disjoint set
  • complement of a set

1.4 Set Operations with Two Sets

  • intersection of two sets
  • union of two sets
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© Mar 18, 2026 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.