with an Introduction to Cosmic Topology

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Reading GCT

The current version of the text was compiled in October, 2020, and it is absolutely free to read. If you adopt this text for a course or independent study, please let the author know (contact).

Download a pdf

You can download a pdf document suitable for screen viewing (with hyperlinks) or for printing:

Bound Copy

If you want the convenience of holding a bound copy of the book in your hands, GCT is available for purchase through here:

GCT Guide

The GCT Guide is an online companion to the text, providing web-based computational tools (Sage cells) to help with calculations, as well as Geogebra activities to engage the reader with compass and ruler constructions used throughout the text.