From a91f4bdde86229739ebe6293827145ab6909a7c6 Mon Sep 17 00:00:00 2001
From: dos-reis <gdr@axiomatics.org>
Date: Tue, 1 Feb 2011 20:33:57 +0000
Subject: 	* algebra/files.spad.pamphlet (Library): Remove assignment to
 Rep. 	* algebra/lie.spad.pamphlet (AssociatedLieAlgebra): Likewise. 
 (AssociatedJordanAlgebra): Likewise. 	(LieSquareMatrix): Likewise.

---
 src/ChangeLog                   |  7 +++++++
 src/algebra/files.spad.pamphlet |  7 +++----
 src/algebra/lie.spad.pamphlet   | 27 ++++++++++-----------------
 3 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/src/ChangeLog b/src/ChangeLog
index fb633d2b..c92b22d1 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2011-02-01  Gabriel Dos Reis  <gdr@cs.tamu.edu>
+
+	* algebra/files.spad.pamphlet (Library): Remove assignment to Rep.
+	* algebra/lie.spad.pamphlet (AssociatedLieAlgebra): Likewise.
+	(AssociatedJordanAlgebra): Likewise.
+	(LieSquareMatrix): Likewise.
+
 2011-02-01  Gabriel Dos Reis  <gdr@cs.tamu.edu>
 
 	* interp/nrunopt.boot (NRTgetLookupFunction): Explain reason for
diff --git a/src/algebra/files.spad.pamphlet b/src/algebra/files.spad.pamphlet
index 695db887..1e30c441 100644
--- a/src/algebra/files.spad.pamphlet
+++ b/src/algebra/files.spad.pamphlet
@@ -437,10 +437,9 @@ Library(): Join(TableAggregate(String, Any),Eltable(Symbol,Any)) with
              ++ \spad{lib}.  It can later be extracted using the key \spad{k}.
 
     == KeyedAccessFile(Any) add
-         Rep := KeyedAccessFile(Any)
-         library f == open f
-         elt(f:%,v:Symbol) == elt(f, string v)
-         setelt(f:%, v:Symbol, val:Any) == setelt(f, string v, val)
+         library f == per open f
+         elt(f:%,v:Symbol) == elt(rep f, string v)
+         setelt(f:%, v:Symbol, val:Any) == setelt(rep f, string v, val)
 
 @
 \section{License}
diff --git a/src/algebra/lie.spad.pamphlet b/src/algebra/lie.spad.pamphlet
index 3d78a057..d039c5ef 100644
--- a/src/algebra/lie.spad.pamphlet
+++ b/src/algebra/lie.spad.pamphlet
@@ -56,10 +56,9 @@ AssociatedLieAlgebra(R:CommutativeRing,A:NonAssociativeAlgebra R):
       FiniteRankNonAssociativeAlgebra(R)
 
   private ==> A add
-    Rep := A
-    (a:%) * (b:%) == (a::Rep) * $Rep (b::Rep) -$Rep (b::Rep) * $Rep (a::Rep)
-    coerce(a:%):A == a :: Rep
-    coerce(a:A):% == a :: %
+    (a:%) * (b:%) == per(rep a * rep b - rep b * rep a)
+    coerce(a:%):A == rep a
+    coerce(a:A):% == per a
     (a:%) ** (n:PositiveInteger) ==
       n = 1 => a
       0
@@ -112,16 +111,13 @@ AssociatedJordanAlgebra(R:CommutativeRing,A:NonAssociativeAlgebra R):
       FiniteRankNonAssociativeAlgebra(R)
 
   private ==> A add
-    Rep := A
-    two  : R := (1$R + 1$R)
-    oneHalf : R := (recip two) :: R
+    oneHalf : R := recip(1$R + 1$R) :: R
     (a:%) * (b:%) ==
-      zero? two => error
-        "constructor must no be called with Ring of characteristic 2"
-      ((a::Rep) * $Rep (b::Rep) +$Rep (b::Rep) * $Rep (a::Rep)) * oneHalf
-      -- (a::Rep) * $Rep (b::Rep) +$Rep (b::Rep) * $Rep (a::Rep)
-    coerce(a:%):A == a :: Rep
-    coerce(a:A):% == a :: %
+      characteristic$R = 2 => error
+        "constructor must not be called with Ring of characteristic 2"
+      per((rep a * rep b + rep b * rep a) * oneHalf)
+    coerce(a:%):A == rep a
+    coerce(a:A):% == per a
     (a:%) ** (n:PositiveInteger) == a
 
 @
@@ -155,8 +151,6 @@ LieSquareMatrix(n,R): Exports == Implementation where
       FramedNonAssociativeAlgebra R) --with
 
   Implementation ==> AssociatedLieAlgebra (R,SquareMatrix(n, R)) add
-
-    Rep :=  AssociatedLieAlgebra (R,SquareMatrix(n, R))
       -- local functions
     n2 : PositiveInteger := n*n
 
@@ -185,8 +179,7 @@ LieSquareMatrix(n,R): Exports == Implementation where
 
 
     convDM v ==
-      sq := conv v
-      coerce(sq)$Rep :: %
+      per(conv(v)::Rep)
 
     basis() ==
       n2 : PositiveInteger := n*n
-- 
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