Happy Friday, hexbears!
A short mega today, since I just noticed one has not yet been posted.
Paul Erdos was an extraordinarily prolific mathematician, who produced contributions to mathematics that continue to astound today in terms of both quantity and quality.
I read this in his wikipedia bio, and thought it was interesting:
Possessions meant little to Erdős; most of his belongings would fit in a suitcase, as dictated by his itinerant lifestyle. Awards and other earnings were generally donated to people in need and various worthy causes. He spent most of his life traveling between scientific conferences, universities and the homes of colleagues all over the world. He earned enough in stipends from universities as a guest lecturer, and from various mathematical awards, to fund his travels and basic needs; money left over he used to fund cash prizes for proofs of "Erdős problems". He would typically show up at a colleague's doorstep and announce "my brain is open", staying long enough to collaborate on a few papers before moving on a few days later. In many cases, he would ask the current collaborator about whom to visit next.
Erdos is also believed to have been asexual and aromantic. :hexbear-aromantic:
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Other fun facts about Erdos:
He used amphetamines heavily. At one point, one of his friends was worried about him and asked him to quit for a month. Erdos did, easily, and at the end of the month said to his friend something like "congrats, you've delayed the course of mathematics by a month."
Erdos was so prolific and had so many collaborators that it's like 7 degrees of Kevin Bacon in mathematics, still. If you published a paper with Erdos you have an Erdos number of 0. Publish a paper with someone who published a paper with Erdos and your Erdos number is 1. And so on. Erdos has been dead for awhile and these numbers are still small. My Erdos number (my advisor's number +1, because I've only ever published with my advisor) is I think 4, maybe 5.
Edit: You actually start Erdos number calculations from 1, not 0. And yes, my Erdos number is 4, which, since we're starting from 1, is actually 1 less than I thought. My advisor published a paper with a person who published a paper with a person who published a paper with Erdos.
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