ThmDex – An index of mathematical definitions, results, and conjectures.
Isotonicity of limits of real sequences
Formulation 0
Let $\mathbb{R}$ be the D1817: Topological ordered set of real numbers such that
(i) $x, y : \mathbb{N} \to \mathbb{R}$ are each a D336: Convergent sequence in $\mathbb{R}$
(i) \begin{equation} \forall \, n \in \mathbb{N} : x_n \leq y_n \end{equation}
Then \begin{equation} \lim_{n \to \infty} x_n \leq \lim_{n \to \infty} y_n \end{equation}
Formulation 1
Let $\mathbb{R}$ be the D1817: Topological ordered set of real numbers such that
(i) $x, y : \mathbb{N} \to \mathbb{R}$ are each a D336: Convergent sequence in $\mathbb{R}$
Then \begin{equation} x \leq y \quad \implies \quad \lim_{n \to \infty} x_n \leq \lim_{n \to \infty} y_n \end{equation}