CheckTranslations( G )
G.translations is indeed correct. If
incorrect, a warning message is printed, otherwise GAP remains silent.
In the case of an incorrect translation basis a new CrystGroup must be
created, and the computations must be started afresh, because the wrong
translation basis may have produced wrong information components.
CheckTranslations is useful if a basis has been added with
AddTranslationsCrystGroup, and doubts arise later whether the basis
added was correct.
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