Definition: Real Identity Function

Let \(a\) be real number. The identity function is a function defined by


for all \(a\in\mathbb R\).

The following graph visualizes the identity function.

  1. Proposition: Identity Function is Continuous

Proofs: 1 2
Propositions: 3 4 5 6 7

Thank you to the contributors under CC BY-SA 4.0!