---
id: 20250818165010
title: Liveness Properties
type: permanent
created: 2025-08-18T20:50:10Z
modified: 2025-08-18T20:54:38Z
tags: []
---

# Liveness Properties

Liveness properties are kinda the dual of
[[safety-properties]], but instead they say that something
good will eventually happen.

Here's an example:

*If there's someone waiting, the light will eventually turn
green:* 

$ G(request \rightarrow F\, green)$

