The software will automatically detect and join the subsequent parts, like your .002 file, to extract the full document.
The content you are likely extracting is one of the most influential works in the history of logic and mathematics. Principia Mathematica.7z.002
The file extension .7z.002 indicates you have the second part of a multi-volume 7-Zip archive. To access the contents—likely a digital copy of the landmark work by Alfred North Whitehead and Bertrand Russell—you must have all parts of the split archive present. How to Extract the File The software will automatically detect and join the