Skip to content

Define CompatibleVectorFilter for IsCMatRep #54

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
fingolfin merged 2 commits into from
May 15, 2026
Merged

Define CompatibleVectorFilter for IsCMatRep #54

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e8b525c
Define `CompatibleVectorFilter` for `IsCMatRep`
ThomasBreuer May 15, 2026
b423144
moved a test from GAP's tests to the cvec tests
ThomasBreuer May 15, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions gap/cmat.gd
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@ DeclareRepresentation( "IsCMatRep",
IsComponentObjectRep and IsMatrix and IsOrdinaryMatrix and HasLength and
IsRowListMatrix, [] );

InstallMethod( CompatibleVectorFilter, ["IsCMatRep"],
M -> IsCVecRep );

#############################################################################
# Making of matrices:
Expand Down
8 changes: 8 additions & 0 deletions tst/cmat.tst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ gap> NewZeroMatrix(IsCMatRep, GF(3), 3, 2);
#
gap> m:=CMat(ImmutableMatrix(GF(3),[[1,0],[0,1]]*Z(3)));
<cmat 2x2 over GF(3,1)>
gap> CompatibleVectorFilter(m) = ConstructingFilter(CompatibleVector(m));
true
gap> ScalarProductsRows(m,m,1);
Z(3)^0
gap> ScalarProductsRows(m,m,2);
Expand Down Expand Up @@ -60,5 +62,11 @@ gap> Display(c9);
[.12]
]

# moved to the cvec tests from GAP's testbugfix/2012-06-18-t00327.tst
gap> mat:= [ [ Z(2) ] ];;
gap> ConvertToMatrixRep( mat, 2 );
2
gap> cmat:= CMat( mat );; cmat^1000;;

#
gap> STOP_TEST("cmat.tst", 0);