If you are looking for specific versions to read without the hassle of multi-part archives:
Use 7-Zip (Windows) or Keka/The Unarchiver (macOS). Process: Ensure all parts are in the same directory . Right-click the file ending in .001 .
The file is the first part of a split archive, likely containing digital scans or LaTeX source files for either Isaac Newton's Philosophiae Naturalis Principia Mathematica (1687) or the three-volume landmark logic work by Alfred North Whitehead and Bertrand Russell (1910–1913). 1. How to Open the File Principia Mathematica.7z.001
A three-volume set focused on the foundations of mathematics and formal logic.
The original Latin text or the English translation (often by Andrew Motte) regarding the laws of motion and universal gravitation. If you are looking for specific versions to
Depending on the source of your download, the archive likely contains one of the following:
Complete copies are available via the Internet Archive and Project Gutenberg . The file is the first part of a
A file ending in .001 is part of a "split" 7-Zip archive. You cannot open it in isolation; you must have all sequential parts (e.g., .001 , .002 , etc.) in the same folder to reconstruct the original data.