---
tags:
  - Logic
  - propositional-logic
  - derivation-rules
---

**Reiteration (R)** allows us to restate any proposition already in the proof within the main proof or a more deeply nested subproof. Reiteration allows us to reuse any assumptions, or propositions derived from assumptions, without having to introduce a new dependency with another assumption.

![reiteration.png](../img/reiteration.png)