Temporary disable groups of order 243

gap-packages · May 1, 2018 · 403db2a · 403db2a
1 parent f916ec1
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Showing 74 changed files with 13 additions and 79 deletions.
diff --git a/PackageInfo.g b/PackageInfo.g
@@ -61,7 +61,7 @@ Status := "accepted",
 CommunicatedBy := "Bettina Eick (Braunschweig)",
 AcceptDate := "03/2007",
 
-AbstractHTML := "The <span class=\"pkgname\">UnitLib</span> package extends the <span class=\"pkgname\">LAGUNA</span> package and provides the library of normalized unit groups of modular group algebras of all finite p-groups of order not greater than 243 over the field of p elements.",
+AbstractHTML := "The <span class=\"pkgname\">UnitLib</span> package extends the <span class=\"pkgname\">LAGUNA</span> package and provides the library of normalized unit groups of modular group algebras of all finite p-groups of order less than 243 over the field of p elements.",
 
 PackageDoc := rec(
   BookName := "UnitLib",

diff --git a/README.md b/README.md
@@ -17,7 +17,7 @@ long-time computation.  The group  created  with  UnitLib will  have the same
 properties and attributes as the one computed with LAGUNA.
 
 The current version  of UnitLib  contains normalized  unit groups  V(KG)  for 
-all p-groups of order not greater than 243.
+all p-groups of order less than 243.
 
 Libraries  of  normalized  unit groups  of groups  of all  orders  not  larger 
 than 243, except for the order 128, are available in any operating system.  
@@ -26,9 +26,6 @@ The library for  groups  of order 128  was compressed using gzip program and,
 therefore,  will be available  only  in  UNIX-type systems  (including  UNIX-
 installation in Mac OS X and Cygwin installation in Windows).  
 
-To work  with the library  for groups  of order 243 you will also need the IO
-package by Max Neunhöffer to retrieve the data from the UnitLib homepage.
-
 The UnitLib package is redistributed with GAP,  but is not loaded by default. 
 Therefore, to use UnitLib, first you need to load it as follows:
 

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diff --git a/doc/funct.xml b/doc/funct.xml
@@ -128,7 +128,7 @@ gap> IdGroup(G1);
 
 If the first argument <A>s</A> (the order of a group) is not a power of 
 prime, an error message will appear.
-If <A>s</A> is bigger than 243, you will get a warning telling that
+If <A>s</A> is >= 243, you will get a warning telling that
 the library does not contain <M>V(KG)</M> for <M>G</M> of such order, 
 and you can use only data that you already stored in your 
 <File>unitlib/userdata</File> directory with the help of the function
@@ -165,7 +165,7 @@ on Intel Xeon 3.4 GHz with 2048 KB cache.
 	 group <M>V(KG)</M> of the group algebra of the group 
 	 <A>G</A> over the field of <M>p</M> elements. 
 	 <P/>
-	 If the order of <A>G</A> is greater than 243, after this 
+	 If the order of <A>G</A> is >= 243, after this 
 	 you can construct the group <M>V(KG)</M> using  
          <Ref Func="PcNormalizedUnitGroupSmallGroup" /> similarly
 	 to the previous section.
@@ -176,7 +176,7 @@ on Intel Xeon 3.4 GHz with 2048 KB cache.
 	 If there will be no such file there, you will get an error
 	 message, otherwise the computation will begin.
 	 <P/>
-	 If the order of <A>G</A> is less or equal to 243, then
+	 If the order of <A>G</A> is less than 243, then
 	 the file will be created in the <File>unitlib/userdata</File>
 	 directory, but &UnitLib; will continue to use the file
 	 with the same name from the appropriate directory in 

diff --git a/doc/intro.xml b/doc/intro.xml
@@ -36,7 +36,7 @@ In April 2012, &UnitLib; 3.1.0 was updated to comply with &GAP; 4.5.
 <P/>
 The current version of &UnitLib; provides the library of 
 normalized unit groups <M>V(KG)</M> for all <M>p</M>-groups 
-of order not greater than 243. 
+of order less than 243. 
 <P/>
 If you need to work with groups of bigger orders, please write to 
 the maintainers, because they may be already computed or we 
@@ -80,11 +80,13 @@ groups of order 128 in Windows, please write to the maintainer to request
 a version of &UnitLib; with locally stored non-compressed data. 
 <P/> 
 
+<!--
 To work with the library for groups of order 243 you will also need the
 <Package>IO</Package> package by Max Neunhöffer 
 (<URL>https://gap-packages.github.io/io/</URL>)
 to retrieve the data from the &UnitLib; homepage.
 <P/>
+-->
 
 Because the &UnitLib; is an extension of the &LAGUNA; package, you must
 have the &LAGUNA; package installed. You can obtain it from the &GAP; 

diff --git a/doc/manual.xml b/doc/manual.xml
@@ -42,7 +42,7 @@
 
 The &UnitLib; package extends the &LAGUNA; package and provides the 
 library of normalized unit groups of modular group algebras of all 
-finite <M>p</M>-groups of order not greater than 243 over the field 
+finite <M>p</M>-groups of order less than 243 over the field 
 of <M>p</M> elements.
 <P/>
 It also contains a parallel implementation of the computation of the 

diff --git a/doc/tech.xml b/doc/tech.xml
@@ -67,6 +67,7 @@ All further procedures are implemented inside the &LAGUNA; package,
 and their result is uniquely determined and predictable.
 <P/>
 
+<!--
 For most groups all information is stored in a single file. However,
 this is not the case for groups of order 243, where we have about 
 30 MB of data for 67 groups. For these groups we provide a solution
@@ -76,6 +77,7 @@ sequences are available from the &UnitLib; homepage, and the package
 will access them using the function <Ref Func="SingleHTTPRequest" BookName="IO"/>
 from the <Package>IO</Package> package.
 <P/>
+-->
 
 For the reader interested in more details, the package contains
 the file <File>unitlib/lib/genlib.g</File> with the 

diff --git a/lib/unitlib.g b/lib/unitlib.g
@@ -16,7 +16,7 @@ local G, p, K, KG, filename, libfile, gzfile, code, V, i, fam;
 if not IsPrimePowerInt( n ) then
   Error( "Underlying group is not a p-group !!! \n" );
 fi;
-if n > 243 then
+if n >= 243 then
   Print( "WARNING : the library of V(KG) for groups of order ", n, 
          " is not available yet !!! \n", 
 	 "You can use only groups from the unitlib/userdata directory \n",
@@ -124,7 +124,7 @@ local p, K, KG, V, codestring, libfile, output, d, x;
 if not IsPGroup( G ) then
   Error( "<G> is not a p-group !!! \n" );
 fi;
-if Size(G) <= 243 then
+if Size(G) < 243 then
   Print( "WARNING : the normalized unit group V(KG) of the modular group algebra \n",
          " of the given group <G> is already included in the library and \n", 
 	 "You can access it using the function PcNormalizedUnitGroupSmallGroup.\n",