Almost all journals ask for keywords and most authors comply. Does any math researcher out there actually use them to search? Are there mechanisms to do that? I just wrote to someone that I assumed ...
In this 2005 Notices article, Jerold Grossman tracks the proportion of papers in Math Reviews with 1, 2, 3, and >3 authors over time. His data set ends in 1999. I seem to recall reading that in ...