The Ulam sequence is a sequence of positive integers xn, where x1=1, x2=2, and where each xn for n > 2 is defined to be the smallest integer that can be expressed as the sum of two distinct earlier terms in a unique way.
I’ve never before been exposed to this form of mathematics and the results intriguing. Reading along, there’s that pesky Pascal’s triangle yet again. Thanks for the Ulam Overview!
Yes indeed; there were many scientists and engineers and mathematicians behind the scenes at Los Alamos, so not everyone could make the big screen!
I trust your semester is going well.
I realize this is off-subject, but after viewing the pandemic modeling of epidemiology, there is copious room for improvement in these models, at least the ones I saw from University of London. —John
The arXiv preprint server has a strange attitude to research in that area, and any paper that appears to be tangentially related to the pandemic comes with a huge red flag warning. Here’s a typical recent example: https://arxiv.org/abs/2409.06473
Dr Green,
I’ve never before been exposed to this form of mathematics and the results intriguing. Reading along, there’s that pesky Pascal’s triangle yet again. Thanks for the Ulam Overview!
John
Yes indeed; there were many scientists and engineers and mathematicians behind the scenes at Los Alamos, so not everyone could make the big screen!
I trust your semester is going well.
I realize this is off-subject, but after viewing the pandemic modeling of epidemiology, there is copious room for improvement in these models, at least the ones I saw from University of London. —John
The arXiv preprint server has a strange attitude to research in that area, and any paper that appears to be tangentially related to the pandemic comes with a huge red flag warning. Here’s a typical recent example: https://arxiv.org/abs/2409.06473
Thanks! Ulam did a lot of other stuff, such as working on the bomb in Los Alamos. (He isn’t in the film “Oppenheimer”, though.)
I bet this kills at cocktail parties… what a stroke of luck to have a gambling uncle to learn cool tricks from…