In #mathematics, the orbit method (also known as the #Kirillov theory, the method of #coadjointOrbits and by a few similar names) establishes a correspondence between #irreducible #unitaryRepresentations of a #LieGroup and its coadjoint orbits: orbits of the #actionOfTheGroup on the #dualSpace of its #LieAlgebra. The theory was introduced by Kirillov (1961, 1962) for #nilpotentGroups and later extended by #BertramKostant, #LouisAuslander, #LajosPukánszky.

The @homecomputermuseum welcomed Federico Faggin with a wonderful event. Thank you Bart! The museum had their Intel 400X collection, including the world's first microprocessor (the 4004), signed by Federico. And then we had a celebratory dinner at home to commemorate Federico's just-release book, #Irreducible (https://www.collectiveinkbooks.com/essentia-books/our-books/irreducible-consciousness-life-computers-human-nature). Claudia and I are already missing Federico and Elvia!

And my living room was turned into a studio again! But the quality of my guest required no less: it was an honor to spend a wonderful week with the venerable Federico Faggin, inventor of the microprocessor, MOS silicon gate technology, as well as the Z80, to promote his new book, #Irreducible (https://www.collectiveinkbooks.com/essentia-books/our-books/irreducible-consciousness-life-computers-human-nature)

And my living room was turned into a studio again! But it was worth it because of the guest of honor: the venerable Federico Faggin. We just spent a wonderful week together, promoting his new book, #Irreducible (https://www.collectiveinkbooks.com/essentia-books/our-books/irreducible-consciousness-life-computers-human-nature).

#FedericoFaggin #Irreducible