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GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it

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<!-- ##  abstract.xml         RCWA documentation          Stefan Kohl  ## -->

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<Abstract>

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&RCWA; is a package for &GAP;&nbsp;4. It provides implementations of

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algorithms and methods for computing in certain infinite permutation groups

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acting on the set of integers. This package can be used to investigate the

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following types of groups and many more:

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<List>

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  <Item>

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    Finite groups, and certain divisible torsion groups which they

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    embed into.

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  </Item>

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  <Item>

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    Free groups of finite rank.

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  </Item>

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  <Item>

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    Free products of finitely many finite groups.

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  </Item>

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  <Item>

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    Direct products of the above groups.

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  </Item>

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  <Item>

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    Wreath products of the above groups with finite groups and

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    with&nbsp;(&ZZ;,+).

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  </Item>

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  <Item>

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    Subgroups of any such groups.

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  </Item>

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</List>

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With the help of this package, the author has found a countable simple

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group which is generated by involutions interchanging disjoint residue

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classes of &ZZ; and which all the above groups embed into --

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see&nbsp;<Cite Key="Kohl09"/>. <P/>

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</Abstract>

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