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- Path: sparky!uunet!ogicse!network.ucsd.edu!galaxy!ucrmath!baez
- From: baez@ucrmath.ucr.edu (john baez)
- Newsgroups: sci.math
- Subject: Re: Matrix Logarithms
- Message-ID: <22036@galaxy.ucr.edu>
- Date: 28 Aug 92 18:42:03 GMT
- Article-I.D.: galaxy.22036
- References: <1992Aug26.050544.15141@newshost.anu.edu.au>
- Sender: news@galaxy.ucr.edu
- Organization: University of California, Riverside
- Lines: 10
- Nntp-Posting-Host: ucrmath
-
- In article <1992Aug26.050544.15141@newshost.anu.edu.au> rwc124@rsphy7.anu.edu.au (Roderick Vance) writes:
- >Let U be a unitary, symmetric matrix; U is expressible as
- >
- >U = exp(i H), where H is real and symmetric.
- >
- >I should like to know whether there is a simple method of finding
- >H given U, aside from diagonalising U.
-
- Just one point - H is not at all unique. Sorry if this is obvious to
- you; if one didn't notice this it could cause a lot of sorrow.
-