represent a subgroup of a group
set of equations designating the generators of the subgroup
the group for which this is a subgroup
The function subgrel is used as a procedure and an unevaluated procedure call. As a procedure, subgrel checks its arguments and then either exits with an error or returns the unevaluated subgrel call.
The first argument is a set of equations or words on the generators of the parent group. The left side of each equation is the name of a subgroup generator; the right side is a word in the group generators (see grelgroup) representing the subgroup generator. If only a word is specified, then a name for the generator is produced automatically.
the next example will give an error:
Error, (in subgrel) generator [a, b, c] contains a syllable `c' that is not a generator, or the inverse of a generator, of the parent group
Maple will generate names for any unnamed generators:
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