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D.15.13.9 isGroup

Procedure from library multigrading.lib (see multigrading_lib).

Usage:
isGroup(G); G a list

Purpose:
checks whether G is a valid group

Note:
G should be created by createGroup
(or createQuotientGroup, createTorsionFreeGroup)

Return:
int, 1 if G is a valid group and 0 otherwise

Example:
 


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