OpenAxiom displays Equation(Domain) as:
(3) -> V1=V2
LISP output:
(UNPRINTABLE . UNPRINTABLE)
Type: Equation Domain
(4) -> %::Boolean
Internal Error
The function = with signature (%,%) -> Boolean is missing from
domain Domain
and is missing equality.
\begin{axiom}
V1:=DirectProduct?(3+4,Integer)
V2:=DirectProduct?(7,Integer)
V1=V2
%::Boolean
(V1=V2)$Domain
\end{axiom}
Axiom Version: => /usr/local/lib/open-axiom/x86_64-unknown-linux/1.2.0-2008-05-25
Putting Domain in SetCategory is one possible solution to this problem:
\begin{spad}
)abbrev domain DOMAIN Domain
++ Author: Gabriel Dos Reis
++ Date Create: October 18, 2007.
++ Modified: Bill Page
++ Date Last Updated: June 17, 2008.
++ Basic Operations: coerce, reify
++ Related Constructors: Type, Syntax, OutputForm?
++ Also See: Type, ConstructorCall?
Domain(): Public == Private where
Public ==> SetCategory? with
reify: % -> ConstructorCall?
++ reify(d) returns the abstract syntax for the domain `x'. reflect: ConstructorCall? -> %
++ reflect cc returns the domain object designated by the
++ ConstructorCall? syntax `cc'. The constructor implied
++ by `cc' must be known to the system since it is instantiated.
showSummary: % -> Void
++ showSummary(d) prints out implementation detail information
++ of domain `d'.
Private ==> add
coerce x ==
outputDomainConstructor(x)$Lisp
x = y ==
x0 := reify(x)
y0 := reify(y)
constructorName(x0)=constructorName(y0) and arguments(x0)=arguments(y0)
reify x ==
devaluate(x)$Lisp @ ConstructorCall?
reflect cc ==
evalDomain(cc)$Lisp @ %
showSummary x ==
showSummary(x)$Lisp
\end{spad}
\begin{axiom}
(V1=V2)@Boolean
(Complex Integer = Complex Float)@Boolean
\end{axiom}
\begin{axiom}
V1=V2
%::Boolean
\end{axiom}
Status: open => closed
Some or all expressions may not have rendered properly,
because Axiom returned the following error:
Error: export AXIOM=/usr/local/lib/open-axiom/x86_64-unknown-linux/1.2.0-2008-05-25; export ALDORROOT=/usr/local/aldor/linux/1.1.0; export PATH=$ALDORROOT/bin:$PATH; export HOME=/var/zope2/var/LatexWiki; ulimit -t 600; export LD_LIBRARY_PATH=/usr/local/lib/open-axiom/x86_64-unknown-linux/1.2.0-2008-05-25/lib; LANG=en_US.UTF-8 $AXIOM/bin/AXIOMsys < /var/zope2/var/LatexWiki/6261284722867064244-25px.axm
/bin/sh: /usr/local/lib/open-axiom/x86_64-unknown-linux/1.2.0-2008-05-25/bin/AXIOMsys: not found
Some or all expressions may not have rendered properly,
because Latex returned the following error:
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(see the transcript file for additional information)
Output written on 4574821801308431686-16.0px.dvi (2 pages, 2308 bytes).
Transcript written on 4574821801308431686-16.0px.log.