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Re: Incomplete simplification

Simplify works with this on my version


5.0 for Mac OS X (November 19, 2003)



G1=Simplify[G,   Element[Cases[S, _Symbol,Infinity], Reals]];


G1==G2 // Simplify


Bob Hanlon

> In a message dated Sun, 11 Jul 2004 06:26:30 +0000 (UTC), 
> carlos at writes:<BR><BR>Using Mathematica 4.2 on a mac I defined a 6 x 3 
> symbolic
> matrix and take its Moore-Penrose inverse:
> S={{0,-x31,x21},{x31,0,-x11},{-x21,x11,0},{0,-x32,x22},
>        {x32,0,-x12},{-x22,x12,0}};
> G=PseudoInverse[S];   
> Mathematica thinks the entries are complex, so it returns a
> result with Conjugate[x11], etc.   To get rid of them I tried
> G=Simplify[G,x11\[Element]Reals&&x21\[Element]Reals    <...> ];
> But the Conjugate[...] are still there. Fortunately G=ComplexExpand[G]
> works. But why is Simplify unable to use the reality assumptions?

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