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%W  authors.tex               GAP documentation                      LDFM
%W                                                                 & SMCS
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%H  @(#)$Id: authors.tex,v 4.27.2.2 2006/02/20 00:51:30 gap Exp $
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%Y  Copyright 1997,  Lehrstuhl D fuer Mathematik,  RWTH Aachen,   Germany
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\Chapter{Acknowledgement}

{\obeylines%
We would like to thank the many people who have made contributions of
various kinds to the development of {\GAP} since 1986, in particular:
\medskip
Isabel~M.~Ara{\'u}jo, Robert~Arthur, Hans~Ulrich~Besche, Thomas~Bischops,
Oliver~Bonten, Thomas~Breuer, Frank~Celler, Gene~Cooperman, Bettina~Eick,
Volkmar~Felsch, Franz~G{\accent127 a}hler, Greg~Gamble, Willem~de~Graaf,
Burkhard~H{\accent127 o}fling, Jens~Hollmann, Derek~Holt, Erzs{\'e}bet~Horv{\'a}th, 
Alexander~Hulpke, Ansgar~Kaup, Susanne~Keitemeier, Steve~Linton,
Frank~L{\accent127 u}beck, Bohdan~Majewski, Johannes~Meier, Thomas~Merkwitz, 
Wolfgang~Merkwitz, James Mitchell, J{\accent127 u}rgen~Mnich, Robert~F.~Morse,
Scott Murray, Joachim~Neub{\accent127 u}ser, Max Neunh{\accent127 o}ffer,
Werner~Nickel, Alice~Niemeyer, Dima~Pasechnik, G{\accent127 o}tz~Pfeiffer,
Udo~Polis, Ferenc~R{\'a}k{\'o}czi, Sarah~Rees, Edmund~Robertson,
Colva Roney-Dougal, Ute Schiffer, Jack Schmidt, Martin~Sch{\accent127 o}nert,
{\'A}kos~Seress, Andrew~Solomon, Heiko~Thei{\ss}en, Rob~Wainwright,
Alex~Wegner, Chris~Wensley and Charles~Wright.
}%
\bigskip \bigskip \bigskip

The following list gives the authors, indicated by `A', who designed the code in the first
place as well as the current maintainers, indicated by `M' of the various modules of which
{\GAP} is composed.

Since the process of modularization was started only recently, there might
be omissions both in scope and in contributors.  The compilers of the
manual apologize for any such errors and promise to rectify them in future
editions.

\hfuzz=5pt%

\beginitems
Kernel & 
Frank Celler~(A), Steve Linton~(AM), Frank L{\accent127 u}beck~(AM), 
Werner Nickel~(AM), Martin Sch{\accent127 o}nert~(A)

Automorphism groups of finite pc groups &
Bettina Eick~(A), Werner Nickel~(M)

Binary Relations &
Robert Morse~(AM), Andrew Solomon~(A) 

Characters and Character Degrees of certain solvable groups &
Hans Ulrich Besche~(A), Thomas Breuer~(AM)

Classes in nonsolvable groups &
Alexander Hulpke~(AM)

Classical Groups &
Thomas Breuer~(AM), Frank Celler~(A), Stefan Kohl~(AM), 
Frank L{\accent127 u}beck~(AM), Heiko Thei{\ss}en~(A)

Congruences of magmas, semigroups and monoids &
Robert Morse~(AM), Andrew Solomon~(A)

Cosets and Double Cosets &
Alexander Hulpke~(AM)

Cyclotomics &
Thomas Breuer~(AM)

Dixon-Schneider Algorithm &
Alexander Hulpke~(AM)

Documentation Utilities &
Frank Celler~(A), Heiko Thei{\ss}en~(A), Alexander Hulpke~(A), 
Willem de Graaf~(A), Steve Linton~(A), Werner Nickel~(A), Greg Gamble~(AM)

Factor groups &
Alexander Hulpke~(AM)

Finitely presented groups &
Volkmar Felsch~(A), Alexander Hulpke~(AM), Martin Schoenert~(A)

Finitely presented monoids and semigroups &
Isabel Ara{\'u}jo~(A), Derek Holt~(A), Alexander Hulpke~(A), James
Mitchell~(M), G{\accent127 o}tz Pfeiffer~(A), Andrew Solomon~(A)

{\GAP} for MacOS & 
Burkhard H{\accent127 o}fling~(AM)

Group actions &
Heiko Thei{\ss}en~(A) and Alexander Hulpke~(AM)

Homomorphism search &
Alexander Hulpke~(AM)

Homomorphisms for finitely presented groups &
Alexander Hulpke~(AM)

Identification of Galois groups &
Alexander Hulpke~(AM)

Intersection of subgroups of finite pc groups &
Frank Celler~(A), Bettina Eick~(A), Werner Nickel~(M)

Irreducible Modules over finite fields for finite pc groups &
Bettina Eick~(AM)

Isomorphism testing with random methods &
Hans Ulrich Besche~(AM), Bettina Eick~(AM)

Lie algebras &
Thomas Breuer~(A), Craig Struble~(A), Juergen Wisliceny~(A), Willem A. de Graaf~(AM)

Monomiality Questions &
Thomas Breuer~(AM), Erzs{\'e}bet Horv{\'a}th~(A)

Multiplier and Schur cover &
Werner Nickel~(AM), Alexander Hulpke~(AM)

One-Cohomology and Complements &
Frank Celler~(A) and Alexander Hulpke~(AM)

Partition Backtrack algorithm &
Heiko Thei{\ss}en~(A), Alexander Hulpke~(M)

Permutation group composition series &
{\'A}kos Seress~(AM)

Permutation group homomorphisms &
{\'A}kos Seress~(AM), Heiko Thei{\ss}en~(A), Alexander Hulpke~(M)

Permutation Group Pcgs &
Heiko Thei{\ss}en~(A), Alexander Hulpke~(M)

Possible Permutation Characters &
Thomas Breuer~(AM), G{\accent127 o}tz Pfeiffer~(A)

Possible Class Fusions, Possible Power Maps
Thomas Breuer~(AM)

Primitive groups library &
Heiko Thei{\ss}en~(A), Colva Roney-Dougal~(AM)

Properties and attributes of finite pc groups &
Frank Celler~(A), Bettina Eick~(A), Werner Nickel~(M)

Random Schreier-Sims &
{\'A}kos Seress~(AM)

Rational Functions &
Frank Celler~(A) and Alexander Hulpke~(AM)

Semigroup relations &
Isabel Araujo~(A), Robert F. Morse~(AM), Andrew Solomon~(A)

Special Pcgs for finite pc groups &
Bettina Eick~(AM)

Stabilizer Chains &
{\'A}kos Seress~(AM), Heiko Thei{\ss}en~(A), Alexander Hulpke~(M)

Strings and Characters & 
Martin Sch{\accent127 o}nert~(A), Frank Celler~(A), Thomas Breuer~(A), 
Frank L{\accent127 u}beck~(AM)

Structure Descriptions for Finite Groups &
Stefan Kohl (AM), Markus P{\accent127 u}schel(A), Sebastian Egner(A)

Subgroup lattice &
Martin Sch{\accent127 o}nert~(A), Alexander Hulpke~(AM)

Subgroup lattice for solvable groups &
Alexander Hulpke (AM)

Subgroup presentations &
Volkmar Felsch~(A), Werner Nickel~(M)

The Help System &
Frank Celler~(A), Frank L{\accent127 u}beck~(AM)

Tietze transformations &
Volkmar Felsch~(A), Werner Nickel~(M)

Transformation semigroups &
Isabel Araujo~(A), Robert Arthur~(A), Robert F. Morse~(AM), 
Andrew Solomon~(A)

Transitive groups library &
Alexander Hulpke~(AM)

Two-cohomology and extensions of finite pc groups &
Bettina Eick~(AM)

\enditems

\hfuzz=0.1pt%

%The system design of {\GAP}~4 was initiated by
%Martin~Sch{\accent127 o}nert and has been continued by
%Thomas~Breuer, Frank~Celler and Steve~Linton.
%\bigskip
%Large parts of {\GAP}~4 have also been designed and written by:
%\medskip
%Bettina~Eick, Volkmar~Felsch, Willem~de~Graaf, Alexander~Hulpke,
%Werner~Nickel, Ferenc~R{\'a}k{\'o}czi, {\'A}kos~Seress and Heiko~Thei{\ss}en.
%\bigskip
%The Macintosh Version of {\GAP} has been written and maintained by Burkhard
%H{\accent127 o}fling.

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