Re: Help with minimization of Eigenvalues
- To: mathgroup at smc.vnet.net
- Subject: [mg87792] Re: Help with minimization of Eigenvalues
- From: Chimico <Dario.Bressanini at gmail.com>
- Date: Wed, 16 Apr 2008 22:34:56 -0400 (EDT)
- References: <fu4ll6$sfq$1@smc.vnet.net> <fu4n2k$30$1@smc.vnet.net>
On Apr 16, 1:14 pm, Jens-Peer Kuska <ku... at informatik.uni-leipzig.de>
wrote:
> Eig[a_?NumericQ, b_?NumericQ] := With[{m = {{a, b}, {b, -a + 1}},
> s = {{1, 0}, {0, 3 a}}},
> Eigenvalues[N[{m, s}]] // First
> ]
>
> may help.
Thanks. Unfortunately my matrices cannot be local and defined in the
function Eig, and if I write
Eig[a_?NumericQ, b_?NumericQ] := With[{m1 = m, s1 = s},
Eigenvalues[N[{m1,
s1}]] // First]
trying to assign the global matrices m and s to the local m1 and s1
still does not work.
I do not understand the logic. What is happening?
Dario