An announcement of [Christopher] Zeeman's lecture at Northwestern University in the spring of 1977 contains a quote describing catastrophe theory as the most important development in mathematics since the invention of calculus 300 years ago. — Stephen Smale Copy Share Image
An announcement of [Christopher] Zeeman's lecture at Northwestern University in the spring of 1977 contains a quote describing catastrophe theory as the most important… — Stephen Smale Copy Share Image
![“An announcement of [Christopher] Zeeman's lecture at Northwestern University in the spring of 1977 contains a quote describing catastrophe theory as the most important development in mathematics since the invention of calculus 300 years ago.” quote by Stephen Smale](https://sms4smile.com/quotes/img-quotes/42a/stephen-smale-279769_announcements_an-announcement-of-christopher-zeeman-s_2260453.jpg)