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4 About the Info Class
 4.1 The Info Class InfoCountAlg

4 About the Info Class

4.1 The Info Class InfoCountAlg

An info class InfoCountAlg for this package is provided. Depending on the chosen level the function NumberOfClassTwoAlgebras (2.2-1) gives information on the progress of the computation.

The default value is 2.

If the info class is chosen to be 0 no intermediate data is printed.

gap> SetInfoLevel(InfoCountAlg,0);
gap> NumberOfClassTwoAlgebras(2,Kronecker);
[ q-(q-0,2)+5, 3*q-(q-0,2)+6 ]

If the info class is chosen to be 1 it is just printed at what stage the algorithm is.

gap> SetInfoLevel(InfoCountAlg,1);
gap> NumberOfClassTwoAlgebras(2,Kronecker);
#I  Determine exceptional chars
#I  Determine or catch extension dimensions
#I  Determine jnf types in GL
#I  Determine equations for 4 types 
#I  Apply action to 4 types
#I  Determine fixed points in dims: [ 1 .. 2 ]
#I  Determine PORC poly in dims: [ 1 .. 2 ]
#I  Simplify PORC polys
[ q-(q-0,2)+5, 3*q-(q-0,2)+6 ]

If the info class is chosen to be 2 details are given while the types of matrices are considered. Note that not all types are considered. There are symmetries used such that some types are skipped.

gap> SetInfoLevel(InfoCountAlg,2);
gap> NumberOfClassTwoAlgebras(2,Kronecker);
#I  Determine exceptional chars
#I  Determine or catch extension dimensions
#I  Determine jnf types in GL
#I  Determine equations for 4 types 
#I    Consider type 1
#I      Got field description
#I      Got 0 elementary equations
#I      Got acting group of size 1
#I      Start inclusion-exclusion
#I      Done
#I    Consider type 3
#I      Got field description
#I      Got 1 elementary equations
#I      Got acting group of size 1
#I      Start inclusion-exclusion
#I      Done
#I    Consider type 4
#I      Got field description
#I      Got 1 elementary equations
#I      Got acting group of size 1
#I      Start inclusion-exclusion
#I      Done
#I  Apply action to 4 types
#I  Determine fixed points in dims: [ 1 .. 2 ]
#I  Determine PORC poly in dims: [ 1 .. 2 ]
#I  Simplify PORC polys
[ q-(q-0,2)+5, 3*q-(q-0,2)+6 ]
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