On Friday, January 27, 2017 at 5:33:12 AM UTC, [email protected] wrote:
>
> Solved, kind of, but please read...
>
> On Thu, 26 Jan 2017, Dima Pasechnik wrote:
>
> > But from the SageNB I got
> >
> > #I MakeReadOnlyGlobal: GradedAlgebraPresentationType no value
> > bound
> > true
> >
> > This looks OK
>
> But why the error message?
>
GAP's #I tagged things are not error messages ('I' stands for information)
How many of these you get depends upon the verbosity level you set.
By the way, this is the full output of sage --gap command on your input:
gap> LoadPackage("HAP");
#I polymake command not found. Please set POLYMAKE_COMMAND by hand
----------------------------------------------------------------
Loading polymaking 0.8.1
(A package for using polymake in GAP)
by Marc Roeder
----------------------------------------------------------------
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Loading Cryst 4.1.12 (Computing with crystallographic groups)
by Bettina Eick (http://www.icm.tu-bs.de/~beick/),
Franz Gähler (http://www.math.uni-bielefeld.de/~gaehler/), and
Werner Nickel (http://www.mathematik.tu-darmstadt.de/~nickel/).
Homepage: http://www.math.uni-bielefeld.de/~gaehler/gap45/packages.php
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Loading CrystCat 1.1.6 (The crystallographic groups catalog)
by Volkmar Felsch (http://www.math.rwth-aachen.de/~Volkmar.Felsch/) and
Franz Gähler (http://www.math.uni-bielefeld.de/~gaehler/).
Homepage: http://www.math.uni-bielefeld.de/~gaehler/gap45/packages.php
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Loading AClib 1.2 (Almost Crystallographic Groups - A Library and
Algorithms)
by Karel Dekimpe (http://www.kulak.ac.be/~dekimpe) and
Bettina Eick (http://www.icm.tu-bs.de/~beick).
Homepage: http://www.icm.tu-bs.de/~beick/so.html
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
#I HAP warning: Set POLYMAKE_PATH manually if needed.
#I MakeReadOnlyGlobal: GradedAlgebraPresentationType no value bound
Loading HAP 1.11.13 ...
----------------------------------------------------------------
This is HAPcryst version 0.1.11
by Marc Roeder
----------------------------------------------------------------
true
gap> F:=FreeGroup(2);; x:=F.1;; y:=F.2;;
gap> G:=F/[x^2,y^201,(x*y)^2];; G:=Image(IsomorphismPermGroup(G));;
gap> GroupHomology(G,99);
[ 2, 3, 67 ]
> GroupHomology(G,99);
> >
> > (I tried this with contents "gap" - set by the 4th
> > switch above the cells)
>
> Me too.
>
> > Forgotten ';' or something like this?
>
> No. I tried
>
> GroupHomology(G,99x);
>
> to test and got an error
>
> RuntimeError: Gap terminated unexpectedly while reading in a large line:
> Gap produced error output
> Error, Variable: '99x' must have a value
>
> I also tried
>
> F:=FreeGroup(2);; x:=F.1;; y:=F.2;;
> G:=F/[x^2,y^201,(x*y)^2];; G:=Image(IsomorphismPermGroup(G));
>
> and got
>
> <permutation group of size 402 with 2 generators>
>
> So, I tried
>
> foo:=GroupHomology(G,99);
>
> and a cell with only
>
> foo
>
> and got
>
> [ 2, 3, 67 ]
>
> So what the hell... I do not get output from the last line as I should?
> SageNB and some strang error?
>
What version of GAP/Sage are you running?
Try commands in cells one by one...
(If you like to maintain sageNB, you're most welcome :-))
>
> --
> Jori Mäntysalo
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