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Re: Help to define linked domains for variables
*To*: mathgroup at smc.vnet.net
*Subject*: [mg98244] Re: Help to define linked domains for variables
*From*: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
*Date*: Fri, 3 Apr 2009 04:38:23 -0500 (EST)
*References*: <gr21ji$loe$1@smc.vnet.net>
Not sure if I understood the problem. You can write the relations as
follows (assuming you forgot some quotes):
\[CurlyEpsilon] = \[Piecewise] {
{-1, z < 0},
{0, z == 0},
{1, z > 0}
}
\[CurlyEpsilon]' = \[Piecewise] {
{-1, r $B!](B a < 0},
{0, r $B!](B a == 0},
{1, r $B!](B a > 0}
}
I uppose there is something you want to solve here, but you have to
make yourselve a bit clearer.
Cheers -- Sjoerd
On Apr 2, 11:47 am, Shay Reboh <shayre... at gmail.com> wrote:
> I am a very basic user of Mathematica and I have found the following
> problem.
> I have a function where I need to define for the variable $B&E(B, $B&E!l(B and z
> the following relations
>
> $B&E(B = $B!](B1 if z < 0;
> $B&E(B = 0 if z = 0;
> $B&E(B = 1 if z > 0
> $B&E!l(B = $B!](B1 if r $B!](B a < 0;
> $B&E(B = 0 if r $B!](B a = 0;
> $B&E(B = 1 if r $B!](B a > 0
>
> Thanks in advance for any help
>
> Shay
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