Definition:Continuous Extension/Real Function
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Let $A$, $B \subseteq \R$ be subsets of the real numbers such that $A \subseteq B$.
Let $f: A \to \R$ and $g: B \to \R$ be continuous real functions.
Then $g$ is a continuous extension of $f$ if and only if:
- $\forall x \in A : \map f x = \map g x$