Physicist, mathematician and well known writer Freeman Dyson has passed away. Followed his work for years. A powerful, widely thinking, iconoclastic mind.
Freeman Dyson: 1923 - 2020
Most recently see his work in The Edge:
And his Wikipedia entry. https://en.wikipedia.org/wiki/Freeman_Dyson
".... Freeman John Dyson FRS (15 December 1923 – 28 February 2020) was an English-born American theoretical physicist and mathematician known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering.[7][8] He was professor emeritus in the Institute for Advanced Study in Princeton, a member of the Board of Visitors of Ralston College[9] and a member of the Board of Sponsors of the Bulletin of the Atomic Scientists.[10]
Dyson originated several concepts that bear his name, such as Dyson's transform, a fundamental technique in additive number theory,[11] which he developed as part of his proof of Mann's theorem;[12] the Dyson tree, a hypothetical genetically-engineered plant capable of growing in a comet; the Dyson series, a perturbative series where each term is represented by Feynman diagrams; the Dyson sphere, a thought experiment that attempts to explain how a space-faring civilization would meet its energy requirements with a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output; and Dyson's eternal intelligence, a means by which an immortal society of intelligent beings in an open universe could escape the prospect of the heat death of the universe by extending subjective time to infinity while expending only a finite amount of energy. .... "
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