Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
In the arXiv repository, preprints are sometimes cross-tagged in several categories. As a result, the number of unique preprints is 307,902.
| Category | # subcategories | # preprints |
|---|---|---|
| Biology | 34 | 44454 |
| Computer Science | 40 | 79653 |
| Economics | 12 | 2869 |
| Elec. Eng. Systems Science | 4 | 10686 |
| Health Sciences | 52 | 6100 |
| Mathematics | 32 | 78187 |
| Physics | 51 | 116983 |
| Psychology | 14 | 4120 |
| Social Sciences | 5 | 1938 |
| Statistics | 6 | 22040 |
| Total: | 250 | 367030 |
