Re: bug in bnfnarrow?

[Igor Schein <igor@txc.com>]

On Thu, Mar 28, 2002 at 11:10:43AM -0700, John Jones wrote:
> 
> I have tried this in several versions of gp 2 and they all produce the
> same error.

> ? 1 - 9*x + 14*x^2 + 28*x^3 - 7*x^4 - 12*x^5 + x^6 + x^7
> %1 = x^7 + x^6 - 12*x^5 - 7*x^4 + 28*x^3 + 14*x^2 - 9*x + 1
> ? bnfnarrow(bnfinit(%))
>   ***   non invertible matrix in gauss

Last time it worked was in version 2.0.15.  It's still broken as of
version 2.2.3 

Igor