Re: [Axiom-developer] A curious algebra failure

[Gabriel Dos Reis]

Gabriel Dos Reis <address@hidden> writes:

| On Sat, 11 Aug 2007, Stephen Wilson wrote:
| 
| | From: Stephen Wilson <address@hidden>
| | Date: 11 Aug 2007 19:52:56 -0400
| | In-Reply-To: <address@hidden>
| | Message-ID: <address@hidden>
| | Lines: 26
| | User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
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| | --text follows this line--
| | Gabriel Dos Reis <address@hidden> writes:
| | >      pmatchWithSl(s,p,al) ==
| | >        s=$EmptyMode => nil
| | >        s=p => al
| | >        v:= ASSOC(p,al) => s=rest v or al
| | >        MEMQ(p,$PatternVariableList) => [[p,:s],:al]
| | >        null atom p and null atom s and_
| | >                (al':= pmatchWithSl(first s,first p,al)) and
| | >          pmatchWithSl(rest s,rest p,al')
| | 
| | This function does not appear consistent.
| | 
| |    v:= ASSOC(p,al) => s=rest v or al
| 
| Good spot -- that escapted me.  
| 
| Let me try your suggestion and report later -- due to my set of safety to 3,
| the build takes some time... 

Your suggestion is correct, but the build still fails at the same
point.  Looking at the call to expt(x,n) in the Spad code  I don't
immediatelt see why it should be well-formed.  Do you see why it is
OK? 

-- Gaby