Open the complete accessible book
The complete English book is ready to read. Keep the mathematical notation, have expressions written out in words for listening, explore equations, or check the original source.
One source · many scholarly traditions
Choose an Open Logic edition.
Find an accessible reader, a translation, or a research interlanguage. Source coverage and readable-book coverage are reported separately.
Frozen source scope
Every completion claim is measured against 722 tracked English content files.
Edition catalogue
Accessible editions, languages and registers
Loading the current catalogue…
No edition matches that search and filter.
Accessible English edition
Read, listen, and explore the mathematics.
Read offline
Download EPUB or download the HTML edition. Extract the HTML ZIP and open index.html.
Scope and evidence
This edition follows the main Open Logic book. The separate English preservation edition also includes optional and alternative material. The online reader and downloads include the September 2026 mathematical and written-listening corrections. About this release. The previous Zenodo edition remains available; its successor awaits recovery of the archive service. A prerecorded audiobook is not included.
What the labels mean
A translation file is not automatically a finished book.
Source coverage
How many of the 722 frozen English content files have a translated counterpart; the English preservation edition reports exact source inclusion.
Reader coverage
How many units are actually integrated into one readable, released edition.
Evidence
Canon use, structural checks, public-byte verification, and known limitations stay attached to each claim.