group

5reg

group

A group presentation

Content Model
    group ::= (&xml-reln;*)
Attributes
Name | Type
`generators` | `NUMBER` (required)

## Description

A &xml-group; element stores a single group presentation.

The generators of the group are numbered 0, 1, 2, etc. The total number of generators is specified by the `generators` attribute.

The relations of the group are specified by the child &xml-reln; elements.

### Parents

The following elements contain `group`:

- &xml-fundgroup;

.

### Children

The following elements occur in `group`:

- &xml-reln;

.

## Attributes

`generators`

- The number of generators in this group presentation; this should be a non-negative integer.

## Example

The following &xml; snippet represents the group `< x, y | x y^2 = 1 >`.

    <group generators="2">
      <reln> 0^1 1^2 </reln>
    </group>