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Version numbers

The xAct packages follow a version system formed by a number (like 0.9.8) and a date (in Mathematica notation: {2008, 11, 23} stands for 23 November 2008). The packages cross-check their dates to ensure consistency.

Current version

The current version of the system is 1.1.2 of 23 August 2015. All packages are downloaded together as a single file

The only exceptions are the database of identities of the Invar package, which has to be downloaded separately because of its large size, and the contributed packages xPrint and xPand.

Installation

Read the Installation Notes provided with the packages.

Previous versions