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University of Toronto Mathematics Network

Answers and Explanations

This area is designed to be a place where you can delve more deeply into some foundational questions in mathematics, and find expositions on some topics that often seem puzzling when glimpsed from a distance.

(You may also be interested in our Question Corner area, a place where you can ask your own individual questions and see the answers to the questions of others.)


  • Does "Infinity" Exist?
  • Do "Imaginary Numbers" Really Exist?
  • Does the Number e Have Special Meaning?
  • What Does "Existence" Mean in Mathematics?
  • Number Systems with Different Kinds of Numbers

  • This page last updated: September 1, 1997
    Original Web Site Creator / Mathematical Content Developer: Philip Spencer
    Current Network Coordinator and Contact Person: Any Wilk -

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