Explore Infinity on MathWorld

Infinity is an unbounded quantity greater than every real (and every whole) number.

Infinity is a high school-level concept that would be first encountered in an algebra course. It is listed in the California State Standards for Mathematical Analysis.


Real Number: A real number is a number corresponding to a point on the real number line.

Classroom Articles on Algebra (Up to High School Level)

  • Coefficient
  • Root
  • Geometric Mean
  • Subset
  • Quadratic Equation
  • Union
  • Quadratic Formula