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GAP 4.8.9

For an overview of changes in GAP 4.8.9 see file.

Linux and macOS

Download one of the archives below, unpack it and run ./configure; make in the unpacked directory. Then change to the pkg subdirectory and call ../bin/ to run the script which will build most of the packages that require compilation (provided sufficiently many libraries, headers and tools are available). For further details, see here. Expert users can find the description of all installation options in the file.

gap4r8p9_2017_12_18-23_44.tar.gz 323 MB sha256: 944230a7c0c04c981ed67768854ab293e1536fe7b76c979f24cf00526bedaba2
gap4r8p9_2017_12_18-23_44.tar.bz2 269 MB sha256: 4c5a5bbbdb5275213cc575174f7bfb8bfd61c12bd082770798162b2ae6ac577d 347 MB sha256: 422ebc2d7bbbf86ca0d18c4485e29b090cbc3621b9e6411e1f157597120de346

You may also consider one of the alternative distributions. Note, however, that these are updated independently and may not yet provide the latest GAP release.


We strongly recommend to use the .exe installer which contains binaries for GAP (compiled with the support of GMP and readline libraries) and for selected GAP packages, and provides the standard installation procedure. Note that the path to the GAP directory should not contain spaces. For example, you may install it in C:\gap4r8 (default), D:\gap4r8p3 or C:\Math\GAP\gap4r8, but you must not install it in a directory named like C:\Program files\gap4r8 or C:\Users\alice\My Documents\gap4r8 etc.

gap4r8p9_2017_12_18-23_44.exe 460 MB sha256: 272dd41738f11f2d9b99bb2cc181cbae51ae19cade9885e20817164d7a184c0c

The .exe installer should work for the majority of users. Alternatively (for example, if you don't have administrator's privileges on your Windows computer), you may use the archive and edit .bat files manually following instructions from the file. Furthermore, in case of technical problems with readline support under Windows (e.g. command line editing doesn't work, or GAP crashes at startup), we recommend to try the archive. 484 MB sha256: 027a3c21d51925f9fb0a2b4b6e2e2869e754fec19fe9ac06545d4bef1036ba7b 484 MB sha256: 456c809511c2a20728451e70473542e9f9f95715743f6b4809d8110fe2f68091

In addition, there is an experimental 64-bit version of GAP for Windows here: 481 MB sha256: 0005a755de79af93fc07b345774390f5c63bc8f3357f021de6d3c32946953b9b

Packages included in this release

Each of the GAP 4.8.9 archives contains the core GAP system (the source code, data libraries, regression tests and documentation), and the following selection of packages:

Package name Version Release date Description
4ti2Interface 2017.10.04 04/10/2017 A link to 4ti2
ACE 5.2 11/03/2016 Advanced Coset Enumerator
AClib 1.2 29/05/2012 Almost Crystallographic Groups - A Library and Algorithms
Alnuth 3.1.0 01/12/2017 Algebraic number theory and an interface to PARI/GP
ANUPQ 3.2 29/11/2017 ANU p-Quotient
AtlasRep 1.5.1 30/03/2016 A GAP Interface to the Atlas of Group Representations
AutoDoc 2017.09.08 08/09/2017 Generate documentation from GAP source code
Automata 1.13 19/11/2011 A package on automata
AutomGrp 1.3 28/03/2016 Automata groups
AutPGrp 1.8 25/11/2016 Computing the Automorphism Group of a p-Group
Browse 1.8.7 21/07/2017 browsing applications and ncurses interface
CAP 2017.09.25 25/09/2017 Categories, Algorithms, Programming
Carat 2.1.6 23/05/2016 Interface to CARAT, a crystallographic groups package
Circle 1.6.1 25/09/2017 Adjoint groups of finite rings
cohomolo 1.6.4 20/01/2016 Cohomology groups of finite groups on finite modules
Congruence 1.2.1 26/09/2017 Congruence subgroups of SL(2,Integers)
Convex 2013.12.05 05/12/2013 A package for fan combinatorics
CoReLG 1.20 02/12/2014 computation with real Lie groups
Crime 1.4 01/6/2011 A GAP Package to Calculate Group Cohomology and Massey Products
CRISP 1.4.4 20/03/2016 Computing with Radicals, Injectors, Schunck classes and Projectors
Cryst 4.1.12 10/10/2013 Computing with crystallographic groups
CrystCat 1.1.6 29/05/2012 The crystallographic groups catalog
CTblLib 1.2.2 07/03/2013 The GAP Character Table Library
Cubefree 1.16 06/09/2016 Constructing the Groups of a Given Cubefree Order
cvec 2.5.7 01/08/2017 Compact vectors over finite fields
DESIGN 1.6 23/11/2011 The Design Package for GAP
Digraphs 0.11.0 22/11/2017 Graphs, digraphs, and multidigraphs in GAP
EDIM 1.3.2 12/06/2013 Elementary Divisors of Integer Matrices
Example 3.5.1 04/02/2017 Example/Template of a GAP Package and Guidelines for Package Authors
ExamplesForHomalg 2017.09.02 02/09/2017 Examples for the GAP Package homalg
FactInt 1.6.0 04/12/2017 Advanced Methods for Factoring Integers
FGA 1.3.1 28/02/2016 Free Group Algorithms
FinInG 1.4 23/11/2017 Finite Incidence Geometry
float 0.7.6 09/05/2017 Integration of mpfr, mpfi, mpc, fplll and cxsc in GAP
FORMAT 1.3 05/26/2012 Computing with formations of finite solvable groups.
Forms 1.2.4 26/08/2017 Sesquilinear and Quadratic
FPLSA 1.2.1 04/12/2017 Finitely Presented Lie Algebras
FR 2.4.3 03/11/2017 Computations with functionally recursive groups
fwtree 1.0 23/04/2009 Computing trees related to some pro-p-groups of finite width
GAPDoc 1.6.1 28/11/2017 A Meta Package for GAP Documentation
Gauss 2017.12.07 07/12/2017 Extended Gauss functionality for GAP
GaussForHomalg 2017.09.10 10/09/2017 Gauss functionality for the homalg project
GBNP 1.0.3 08/03/2016 computing Gröbner bases of noncommutative polynomials
GeneralizedMorphismsForCAP 2017.09.09 09/09/2017 Implementations of generalized morphisms for the CAP project
genss 1.6.5 21/11/2017 Generic Schreier-Sims
GradedModules 2017.09.10 10/09/2017 A homalg based package for the Abelian category of finitely presented graded modules over computable graded rings
GradedRingForHomalg 2017.09.02 02/09/2017 Endow Commutative Rings with an Abelian Grading
GRAPE 4.7 08/01/2016 GRaph Algorithms using PErmutation groups
groupoids 1.54 29/11/2017 Calculations with finite groupoids and their homomorphisms
GrpConst 2.5 07/12/2015 Constructing the Groups of a Given Order
Guarana 0.94 27/04/2012 Applications of Lie methods for computations with infinite polycyclic groups
GUAVA 3.13 31/01/2016 a GAP package for computing with error-correcting codes
HAP 1.11.15 21/02/2017 Homological Algebra Programming
HAPcryst 0.1.11 27/10/2013 A HAP extension for crytallographic groups
HAPprime 0.6 09/06/2011 a HAP extension for small prime power groups
hecke 1.4 02/07/2013 Hecke - Specht 2.4 ported to GAP 4
HeLP 3.3 11/12/2017 Hertweck-Luthar-Passi method.
homalg 2017.10.26 26/10/2017 A homological algebra meta-package for computable Abelian categories
HomalgToCAS 2017.11.26 26/11/2017 A window to the outer world
idrel 2.38 15/12/2017 Identities among relations
IntPic 0.2.3 14/09/2017 A package for drawing integers
IO 4.5.0 20/11/2017 Bindings for low level C library I/O routines
IO_ForHomalg 2017.09.02 02/09/2017 IO capabilities for the homalg project
IRREDSOL 1.4 03/08/2017 A library of irreducible soluble linear groups over finite fields and of finite primivite soluble groups
ITC 1.4 06/01/2004 Interactive Todd-Coxeter
json 1.2.0 10/10/2017 Reading and Writing JSON
kan 1.27 20/10/2016 including double coset rewriting systems
kbmag 1.5.4 01/02/2017 Knuth-Bendix on Monoids and Automatic Groups
LAGUNA 3.8.0 24/09/2017 Lie AlGebras and UNits of group Algebras
liealgdb 2.1 28/03/2010 A database of Lie algebras
LiePRing 1.8 08/11/2013 Database and algorithms for Lie p-rings
LieRing 2.3 01/11/2016 finitely presented Lie rings
linboxing 0.5.2 19/05/2011 access to LinBox linear algebra functions from GAP
LinearAlgebraForCAP 2017.09.09 09/09/2017 Category of Matrices over a Field for CAP
LocalizeRingForHomalg 2017.09.02 02/09/2017 A Package for Localization of Polynomial Rings
loops 3.3.0 26/10/2016 Computing with quasigroups and loops in GAP
lpres 0.4.2 08/12/2017 Nilpotent Quotients of L-Presented Groups
MapClass 1.2 24/04/2012 A Package For Mapping Class Orbit Computation
matgrp 0.4 25/02/2015 Matric Group Interface Routines
MatricesForHomalg 2017.11.03 03/11/2017 Matrices for the homalg project
ModIsom 2.3.3 08/01/2016 Computing automorphisms and checking isomorphisms for modular group algebras of finite p-groups
ModulePresentationsForCAP 2017.09.09 09/09/2017 Category R-pres for CAP
Modules 2017.09.10 10/09/2017 A homalg based package for the Abelian category of finitely presented modules over computable rings
Nilmat 1.3 12/09/2017 Computing with nilpotent matrix groups
NormalizInterface 1.0.2 03/12/2017 GAP wrapper for Normaliz
nq 2.5.3 08/03/2016 Nilpotent Quotients of Finitely Presented Groups
NumericalSgps 1.1.5 25/09/2017 A package for numerical semigroups
OpenMath 11.4.2 28/02/2017 OpenMath functionality in GAP
orb 4.8.0 10/11/2017 Methods to enumerate Orbits
ParGAP 1.4.0 17/11/2013 Parallel GAP
PatternClass 2.4.1 28/09/2017 A permutation pattern class package
permut 1.03 30/07/2015 A package to deal with permutability in finite groups
Polenta 1.3.8 29/11/2017 Polycyclic presentations for matrix groups
Polycyclic 2.11 07/03/2013 Computation with polycyclic groups
PolymakeInterface 2015.01.26 26/01/2015 A package to provide algorithms for fans and cones of polymake to other packages
polymaking 0.8.1 16/11/2013 Interfacing the geometry software polymake
profiling 1.3.0 23/02/2017 Line by line profiling and code coverage for GAP
qaos 1.5 30/07/2017 Interfacing the QaoS database from GAP
QPA 1.27 16/12/2017 Quivers and Path Algebras
QuaGroup 1.8 16/08/2013 a package for doing computations with quantum groups
RadiRoot 2.7 09/04/2014 Roots of a Polynomial as Radicals
RCWA 4.6.0 05/12/2017 Residue-Class-Wise Affine Groups
RDS 1.6 16/02/2012 A package for searching relative difference sets
recog 1.2.5 08/03/2016 A collection of group recognition methods
recogbase 1.2.5 08/03/2016 A framework for group recognition
Repsn 3.0.2 25/08/2011 A GAP4 Package for constructing representations of finite groups
ResClasses 4.7.0 05/12/2017 Set-Theoretic Computations with Residue Classes
RingsForHomalg 2017.11.03 03/11/2017 Dictionaries of external rings
SCO 2017.09.10 10/09/2017 SCO - Simplicial Cohomology of Orbifolds
SCSCP 2.2.3 24/09/2017 Symbolic Computation Software Composability Protocol in GAP
Semigroups 3.0.7 02/10/2017 A package for semigroups and monoids
SglPPow 2.0 11/08/2016 Database of groups of prime-power order for some prime-powers
SgpViz 0.999.1 13/09/2017 A package for semigroup visualization
simpcomp 2.1.7 29/09/2017 A GAP toolbox for simplicial complexes
singular 12.04.28 28/04/2012 The GAP interface to Singular
SLA 1.2 01/11/2016 a package for doing computations with simple Lie algebras
Smallsemi 0.6.11 26/04/2017 A library of small semigroups
SONATA 2.8 29/07/2015 System of nearrings and their applications
Sophus 1.23 03/02/2006 Computing in nilpotent Lie algebras
SpinSym 1.5 01/02/2013 Brauer tables of spin-symmetric groups
SymbCompCC 1.2 19/11/2011 Computing with parametrised presentations for p-groups of fixed coclass
TomLib 1.2.6 07/11/2016 The GAP Library of Tables of Marks
ToolsForHomalg 2017.11.05 05/11/2017 Special methods and knowledge propagation tools
Toric 1.9.4 07/03/2017 toric varieties and some combinatorial geometry computations
ToricVarieties 2012.12.22 22/12/2012 A package to handle toric varieties
unipot 1.2 16/11/2004 Computing with elements of unipotent subgroups of Chevalley groups
UnitLib 3.3.0 24/09/2017 Library of normalized unit groups of modular group algebras
utils 0.49 05/12/2017 Utility functions in GAP
Wedderga 4.9.1 11/12/2017 Wedderburn Decomposition of Group Algebras
XGAP 4.26 06/11/2016 a graphical user interface for GAP
XMod 2.64 30/11/2017 Crossed Modules and Cat1-Groups
XModAlg 1.12 14/11/2015 Crossed Modules and Cat1-Algebras