Erdős Birthday
Text only: a birthday tribute to Paul Erdős, joking that his parents have Erdős number −1.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-03-24-erd-s-birthday/ (CC BY-NC 4.0)Transcript
[March 26th] "Happy birthday to Paul Erdős, and congratulations to the only two people with Erdős Number −1: his parents, without whose collaboration none of his could ever have occurred."