and indexed in the Science Citation Index, Current Contents/Physical, Chemical & Earth Sciences, and Scopus. According to the Journal Citation Reports, the journal has a 2020 impact factor of 5.246, ranking it third out of 330 journals in the category "Mathematics". References External links Mathematics journals Publications established in 1874 English-language journals Bimonthly journals Princeton University publications Academic journals published by universities and colleges of the United States 1874 establishments in Iowa