Hugh Everett III

Hugh Everett III (November 11, 1930 – July 19, 1982) was an American physicist who first proposed the many-worlds interpretation (MWI) of quantum physics, which he called his “relative state” formulation.
Discouraged by the “scorn” other physicists heaped on MWI, Everett left physics after completing his Ph.D. Afterwards, he developed the use of generalized Lagrange multipliers in operations research and applied this commercially as a defense analyst and a consultant. He was married to Nancy Everett née Gore. They had two children: Elizabeth Everett and Mark Oliver Everett, frontman of the band Eels. continue…

Hugh Everett III (Maryland, 11 novembre 1930 – McLean, 19 luglio 1982) è stato un fisico statunitense attivo principalmente all’Università di Princeton.
È stato celebre tra i fisici per aver formulato per primo nel 1957 l’interpretazione a molti mondi della meccanica quantistica. continua a leggere

Dear Bob,

While drinking beer yesterday several ideas came about our maximization problem and the question of root selection. You have probably solved the problem by now, but here are a few points anyhow. First, as you know, the solution is a simple saddle point of [equation], gotten by setting both partials to zero. The problem is how to select between the 3 roots which sometimes occur. I have thought a little about why the “magic” multipliers (Lagrange) work to express constraints, and will try to briefly give you the picture: If we have a function f(xi) to be maximized subject to constraints gj(xi) = cj, then we can picture the constraints as limiting our region of interest to a “surface” (subspace) within the xi space. [erasure] There is in fact a whole family of surfaces which can be labeled by the value of the gj(xi) which are constant over any one surface
If we now choose some fixed values [lambda]1, [lambda]2 [lambda]n

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