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<!-- %W  authors.tex               GAP documentation                      LDFM -->
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<!-- %Y  Copyright 1997,  Lehrstuhl D für Mathematik,  RWTH Aachen,   Germany -->
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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.
<P/>
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.
<P/>
<List>
<Mark>Kernel</Mark>
<Item>
Frank Celler&nbsp;(A), Steve Linton&nbsp;(AM), Frank Lübeck&nbsp;(AM), 
Werner Nickel&nbsp;(AM), Martin Schönert&nbsp;(A)
</Item>
<Mark>Automorphism groups of finite pc groups </Mark>
<Item>
Bettina Eick&nbsp;(A), Werner Nickel&nbsp;(M)
</Item>
<Mark>Binary Relations </Mark>
<Item>
Robert Morse&nbsp;(AM), Andrew Solomon&nbsp;(A) 
</Item>
<Mark>Characters and Character Degrees of certain solvable groups </Mark>
<Item>
Hans Ulrich Besche&nbsp;(A), Thomas Breuer&nbsp;(AM)
</Item>
<Mark>Classes in nonsolvable groups </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Classical Groups </Mark>
<Item>
Thomas Breuer&nbsp;(AM), Frank Celler&nbsp;(A), Stefan Kohl&nbsp;(AM), 
Frank Lübeck&nbsp;(AM), Heiko Theißen&nbsp;(A)
</Item>
<Mark>Congruences of magmas, semigroups and monoids </Mark>
<Item>
Robert Morse&nbsp;(AM), Andrew Solomon&nbsp;(A)
</Item>
<Mark>Cosets and Double Cosets </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Cyclotomics </Mark>
<Item>
Thomas Breuer&nbsp;(AM)
</Item>
<Mark>Dixon-Schneider Algorithm </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Documentation Utilities </Mark>
<Item>
Frank Celler&nbsp;(A), Heiko Theißen&nbsp;(A), Alexander Hulpke&nbsp;(A), 
Willem de Graaf&nbsp;(A), Steve Linton&nbsp;(A), Werner Nickel&nbsp;(A), Greg Gamble&nbsp;(AM)
</Item>
<Mark>Factor groups </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Finitely presented groups </Mark>
<Item>
Volkmar Felsch&nbsp;(A), Alexander Hulpke&nbsp;(AM), Martin Schönert&nbsp;(A)
</Item>
<Mark>Finitely presented monoids and semigroups </Mark>
<Item>
Isabel Araújo&nbsp;(A), Derek Holt&nbsp;(A), Alexander Hulpke&nbsp;(A), James
Mitchell&nbsp;(M), Götz Pfeiffer&nbsp;(A), Andrew Solomon&nbsp;(A)
</Item>
<Mark>&GAP; for MacOS </Mark>
<Item>

Burkhard Höfling&nbsp;(AM)
</Item>
<Mark>Group actions </Mark>
<Item>
Heiko Theißen&nbsp;(A) and Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Homomorphism search </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Homomorphisms for finitely presented groups </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Identification of Galois groups </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Intersection of subgroups of finite pc groups </Mark>
<Item>
Frank Celler&nbsp;(A), Bettina Eick&nbsp;(A), Werner Nickel&nbsp;(M)
</Item>
<Mark>Irreducible Modules over finite fields for finite pc groups </Mark>
<Item>
Bettina Eick&nbsp;(AM)
</Item>
<Mark>Isomorphism testing with random methods </Mark>
<Item>
Hans Ulrich Besche&nbsp;(AM), Bettina Eick&nbsp;(AM)
</Item>
<Mark>Lie algebras </Mark>
<Item>
Thomas Breuer&nbsp;(A), Craig Struble&nbsp;(A), Juergen Wisliceny&nbsp;(A), Willem A. de Graaf&nbsp;(AM)
</Item>
<Mark>Monomiality Questions </Mark>
<Item>
Thomas Breuer&nbsp;(AM), Erzsébet Horváth&nbsp;(A)
</Item>
<Mark>Multiplier and Schur cover </Mark>
<Item>
Werner Nickel&nbsp;(AM), Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>One-Cohomology and Complements </Mark>
<Item>
Frank Celler&nbsp;(A) and Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Partition Backtrack algorithm </Mark>
<Item>
Heiko Theißen&nbsp;(A), Alexander Hulpke&nbsp;(M)
</Item>
<Mark>Permutation group composition series </Mark>
<Item>
Ákos Seress&nbsp;(AM)
</Item>
<Mark>Permutation group homomorphisms </Mark>
<Item>
Ákos Seress&nbsp;(AM), Heiko Theißen&nbsp;(A), Alexander Hulpke&nbsp;(M)
</Item>
<Mark>Permutation Group Pcgs </Mark>
<Item>
Heiko Theißen&nbsp;(A), Alexander Hulpke&nbsp;(M)
</Item>
<Mark>Possible Permutation Characters </Mark>
<Item>
Thomas Breuer&nbsp;(AM), Götz Pfeiffer&nbsp;(A)
</Item>
<Mark>Possible Class Fusions, Possible Power Maps </Mark>
<Item>
Thomas Breuer&nbsp;(AM)
</Item>
<Mark>Primitive groups library </Mark>
<Item>
Heiko Theißen&nbsp;(A), Colva Roney-Dougal&nbsp;(AM)
</Item>
<Mark>Properties and attributes of finite pc groups </Mark>
<Item>
Frank Celler&nbsp;(A), Bettina Eick&nbsp;(A), Werner Nickel&nbsp;(M)
</Item>
<Mark>Random Schreier-Sims </Mark>
<Item>
Ákos Seress&nbsp;(AM)
</Item>
<Mark>Rational Functions </Mark>
<Item>
Frank Celler&nbsp;(A) and Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Semigroup relations </Mark>
<Item>
Isabel Araújo&nbsp;(A), Robert F. Morse&nbsp;(AM), Andrew Solomon&nbsp;(A)
</Item>
<Mark>Special Pcgs for finite pc groups </Mark>
<Item>
Bettina Eick&nbsp;(AM)
</Item>
<Mark>Stabilizer Chains </Mark>
<Item>
Ákos Seress&nbsp;(AM), Heiko Theißen&nbsp;(A), Alexander Hulpke&nbsp;(M)
</Item>
<Mark>Strings and Characters </Mark>
<Item>

Martin Schönert&nbsp;(A), Frank Celler&nbsp;(A), Thomas Breuer&nbsp;(A), 
Frank Lübeck&nbsp;(AM)
</Item>
<Mark>Structure Descriptions for Finite Groups </Mark>
<Item>
Stefan Kohl&nbsp;(AM), Markus Püschel&nbsp;(A), Sebastian Egner&nbsp;(A)
</Item>
<Mark>Subgroup lattice </Mark>
<Item>
Martin Schönert&nbsp;(A), Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Subgroup lattice for solvable groups </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Subgroup presentations </Mark>
<Item>
Volkmar Felsch&nbsp;(A), Werner Nickel&nbsp;(M)
</Item>
<Mark>The Help System </Mark>
<Item>
Frank Celler&nbsp;(A), Frank Lübeck&nbsp;(AM)
</Item>
<Mark>Tietze transformations </Mark>
<Item>
Volkmar Felsch&nbsp;(A), Werner Nickel&nbsp;(M)
</Item>
<Mark>Transformation semigroups </Mark>
<Item>
Isabel Araújo&nbsp;(A), Robert Arthur&nbsp;(A), Robert F. Morse&nbsp;(AM), 
Andrew Solomon&nbsp;(A)
</Item>
<Mark>Transitive groups library </Mark>
<Item>
Alexander Hulpke&nbsp;(AM)
</Item>
<Mark>Two-cohomology and extensions of finite pc groups </Mark>
<Item>
Bettina Eick&nbsp;(AM)
</Item>
</List>
<!-- %The system design of &GAP;&nbsp;4 was initiated by -->
<!-- %Martin&nbsp;Schönert and has been continued by -->
<!-- %Thomas&nbsp;Breuer, Frank&nbsp;Celler and Steve&nbsp;Linton. -->
<!-- %</E></E> -->
<!-- %Large parts of &GAP;&nbsp;4 have also been designed and written by: -->
<!-- %<P/> -->
<!-- %Bettina&nbsp;Eick, Volkmar&nbsp;Felsch, Willem&nbsp;de&nbsp;Graaf, Alexander&nbsp;Hulpke, -->
<!-- %Werner&nbsp;Nickel, Ferenc&nbsp;Rákóczi, Ákos&nbsp;Seress and Heiko&nbsp;Theißen. -->
<!-- %</E></E> -->
<!-- %The Macintosh Version of &GAP; has been written and maintained by Burkhard -->
<!-- %Höfling. -->

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