Wednesday, June 3, 2020: From 6:00am–8:00am the AMS website will be be down during maintenance.
Visit our AMS COVID-19 page for educational and professional resources and scheduling updates
ISSN 1088-9485(online) ISSN 0273-0979(print)
John M. H. Olmsted
Bull. Amer. Math. Soc. 51 (1945), 776-780
Full-text PDF Free Access