Category:Indiscrete Rational Extension of Reals
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This category contains results about Indiscrete Rational Extension of Reals.
Let $\struct {\R, \tau_d}$ be the real number line with the usual (Euclidean) topology.
Let $\Q$ denote the set of rational numbers.
Let $\tau^*$ be the indiscrete extension of $\struct {\R, \tau_d}$:
- $\tau^* = \tau_d \cup \set {H: \exists U \in \tau_d: H = U \cap \Q}$
$\tau^*$ is then referred to as the indiscrete rational extension of $\R$.
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