---
title: rootIndexExpression
framework: Accessibility
role: symbol
role_heading: Instance Property
platforms: [iOS 18.2+, iPadOS 18.2+, Mac Catalyst 18.2+, macOS 15.2+, tvOS 18.2+, visionOS 2.2+, watchOS 11.2+]
path: accessibility/axmathexpressionroot/rootindexexpression
---

# rootIndexExpression

## Declaration

```swift
var rootIndexExpression: AXMathExpression { get }
```