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Changes LogVersion 1.4 was released on 03/05/2006. Version 1.5 was released on 12/06/2006. GAP types were introduced for resolutions, chain complexes etc. and methods for PrintObj and ViewObj were introduced. The functions Homology and Cohomology where changed to GAP operations. A Linux shell script "compile" for creating a GAC compiled version of the HAP functions was added. The performance of the functions NonabelianTensorSquare() and ResolutionPrimePowerGroup() was improved. Functions ResolutionSubnormalSeries(), ResolutionAlmostCrystalGroup() and ResolutionAlmostCrystalQuotient() were added. Version 1.6 was released on 15/08/2006. The functions Honology(), Cohomology() and PrimePartDerivedFunctor() have been speeded up. Graphviz is now used to visualize Coxeter diagrams, Graphs of groups and Cayley graphs. The functions ResolutionGraphOfGroups(), ChevalleyEilenbergComplex(), LieAlgebraHomology, LowerCentralSeriesLieAlgebra(), ModPCohomologyRing(), ModPRingGenerators have been included. Version 1.7 was released on 01/09/2006. The functions Epicentre() and IsGraphOfGroups() were renamed EpiCentre() and GraphofGroupsTest() due to name clashes arising from recent modifications to GAP. A minor modification was made to the functions NonabelianTensorSquare() and ThirdHomotopyGroupOfSuspensionB() so that they run on nilpotent infinite groups when the NQ package is loaded. Version 1.7.1 was released on 27/11/2006. The function HomologyPB() was added. This relies on the Simplicial Homology GAP package. It uses probabilistic methods to compute homology. Version 1.7.3 was released on 7/03/2007. The efficiency of the code for the function ResolutionPrimePowerGroup() was improved. Also, a bug in the function ThirdHomotopyGroupSuspensionB() was fixed. Version 1.7.4 was released on 10/04/2007. A bug was fixed in the function NonabelianTensorProduct(). The bug caused incorrect answers. Also, the function PoincareSeries() was added. |