  
  
                                      [1X nq [101X
  
  
               [1X Nilpotent Quotients of Finitely Presented Groups [101X
  
  
                                     2.5.9
  
  
                                26 October 2022
  
  
                                 Werner Nickel
  
  
  
  Werner Nickel
      Homepage: [7Xhttp://www.mathematik.tu-darmstadt.de/~nickel/[107X
  
  -------------------------------------------------------
  [1XCopyright[101X
  [33X[0;0Y© 1992-2007 Werner Nickel[133X
  
  [33X[0;0YThe  [5Xnq[105X  package  is free software; you can redistribute it and/or modify it
  under     the     terms     of    the    GNU    General    Public    License
  ([7Xhttps://www.fsf.org/licenses/gpl.html[107X)  as  published  by the Free Software
  Foundation;  either  version 2 of the License, or (at your option) any later
  version.[133X
  
  
  -------------------------------------------------------
  [1XAcknowledgements[101X
  [33X[0;0YThe author of ANU NQ is Werner Nickel.[133X
  
  [33X[0;0YThe  development  of this program was started while the author was supported
  by  an  Australian  National  University  PhD  scholarship  and  an Overseas
  Postgraduate Research Scholarship.[133X
  
  [33X[0;0YFurther  development  of  this  program  was  done  with  support  from  the
  DFG-Schwerpunkt-Projekt [21XAlgorithmische Zahlentheorie und Algebra[121X.[133X
  
  [33X[0;0YSince  then,  maintenance  of  ANU  NQ  has been taken over by Max Horn. All
  credit  for  creating  ANU  NQ  still  goes to Werner Nickel as sole author.
  However, bug reports and other inquiries should be sent to Max Horn.[133X
  
  [33X[0;0YThe following are the original acknowledgements by Werner Nickel.[133X
  
  [33X[0;0YOver  the  years  a number of people have made useful suggestions that found
  their way into the code: Mike Newman, Michael Vaughan-Lee, Joachim Neubüser,
  Charles Sims.[133X
  
  [33X[0;0YThanks  to Volkmar Felsch and Joachim Neubüser for their careful examination
  of the package prior to its release for GAP 4.[133X
  
  [33X[0;0YThis  documentation was prepared with the [5XGAPDoc[105X package by Frank Lübeck and
  Max Neunhöffer.[133X
  
  
  -------------------------------------------------------
  
  
  [1XContents (nq)[101X
  
  1 [33X[0;0YIntroduction[133X
  2 [33X[0;0YGeneral remarks[133X
    2.1 [33X[0;0YCommutators and the Lower Central Series[133X
    2.2 [33X[0;0YNilpotent groups[133X
    2.3 [33X[0;0YNilpotent presentations[133X
    2.4 [33X[0;0YA sketch of the algorithm[133X
    2.5 [33X[0;0YIdentical Relations[133X
    2.6 [33X[0;0YExpression Trees[133X
    2.7 [33X[0;0YA word about the implementation[133X
    2.8 [33X[0;0YThe input format of the standalone[133X
  3 [33X[0;0YThe Functions of the Package[133X
    3.1 [33X[0;0YNilpotent Quotients of Finitely Presented Groups[133X
      3.1-1 NilpotentQuotient
      3.1-2 NilpotentEngelQuotient
      3.1-3 NqEpimorphismNilpotentQuotient
      3.1-4 LowerCentralFactors
    3.2 [33X[0;0YExpression Trees[133X
      3.2-1 ExpressionTrees
      3.2-2 EvaluateExpTree
    3.3 [33X[0;0YAuxiliary Functions[133X
      3.3-1 NqReadOutput
      3.3-2 NqStringFpGroup
      3.3-3 NqStringExpTrees
      3.3-4 NqElementaryDivisors
    3.4 [33X[0;0YGlobal Variables[133X
      3.4-1 NqRuntime
      3.4-2 NqDefaultOptions
      3.4-3 NqGlobalVariables
    3.5 [33X[0;0YDiagnostic Output[133X
  4 [33X[0;0YExamples[133X
    4.1 [33X[0;0YRight Engel elements[133X
  5 [33X[0;0YInstallation of the Package[133X
    5.1 [33X[0;0YConfiguring for compilation[133X
    5.2 [33X[0;0YCompiling the nq binary[133X
    5.3 [33X[0;0YTesting[133X
    5.4 [33X[0;0YFeedback[133X
  A [33X[0;0YThe nq command line interface[133X
    A.1 [33X[0;0YHow to use the ANU NQ[133X
    A.2 [33X[0;0YThe input format for presentations[133X
    A.3 [33X[0;0YAn example[133X
    A.4 [33X[0;0YSome remarks about the algorithm[133X
  
  
  [32X
