login  home  contents  what's new  discussion  bug reports     help  links  subscribe  changes  refresh  edit

Edit detail for #431 exponentiation wrong in 'LODO' revision 4 of 6

1 2 3 4 5 6
Editor: gdr
Time: 2008/10/13 19:44:21 GMT-7
Note: Fixed in OpenAxiom

added:

From gdr Mon Oct 13 19:44:21 -0700 2008
From: gdr
Date: Mon, 13 Oct 2008 19:44:21 -0700
Subject: Fixed in OpenAxiom
Message-ID: <20081013194421-0700@axiom-wiki.newsynthesis.org>



Submitted by : kratt6 at: 2008-08-29T05:18:31-07:00 (15 years ago)
Name :
Axiom Version :
Category : Severity : Status :
Optional subject :  
Optional comment :

axiom
Dx: LODO(EXPR INT, f+->D(f,x)) := D();
Type: LinearOrdinaryDifferentialOperator?(Expression Integer,theMap LAMBDA-CLOSURE(NIL,NIL,NIL,G1421 envArg,SPADCALL(G1421,QUOTE x,ELT(*1;anonymousFunction;0;initial;internal;MV,0))))
axiom
u := operator 'u;
Type: BasicOperator?
axiom
L := Dx + u(x);
Type: LinearOrdinaryDifferentialOperator?(Expression Integer,theMap LAMBDA-CLOSURE(NIL,NIL,NIL,G1421 envArg,SPADCALL(G1421,QUOTE x,ELT(*1;anonymousFunction;0;initial;internal;MV,0))))
axiom
L**2 = L*L
LatexWiki Image(1)
Type: Equation LinearOrdinaryDifferentialOperator?(Expression Integer,theMap LAMBDA-CLOSURE(NIL,NIL,NIL,G1421 envArg,SPADCALL(G1421,QUOTE x,ELT(*1;anonymousFunction;0;initial;internal;MV,0))))

or

axiom
)cl co
All user variables and function definitions have been cleared. All )browse facility databases have been cleared. Internally cached functions and constructors have been cleared. )clear completely is finished. f: INT->INT:=x+->x+1
LatexWiki Image(2)
Type: (Integer -> Integer)
axiom
K := OREUP(x, INT, 1, f);
Type: Domain
axiom
L := x::K+1;
Type: UnivariateSkewPolynomial?(x,Integer,R -> R,theMap LAMBDA-CLOSURE(NIL,NIL,NIL,G1432 envArg,SPADCALL(G1432,1,ELT(*1;anonymousFunction;1;initial;internal;MV,0))))
axiom
L^2=L*L
LatexWiki Image(3)
Type: Equation UnivariateSkewPolynomial?(x,Integer,R -> R,theMap LAMBDA-CLOSURE(NIL,NIL,NIL,G1432 envArg,SPADCALL(G1432,1,ELT(*1;anonymousFunction;1;initial;internal;MV,0))))

Reason is, that exponentiation is not taken from Monoid, but from SUP.

Martin

fixed in FriCAS? revision 346 --kratt6, Sun, 31 Aug 2008 03:55:56 -0700 reply
Status: open => fixed somewhere

Fixed in OpenAxiom? --gdr, Mon, 13 Oct 2008 19:44:21 -0700 reply