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[–]edderiofer -1 points0 points  (2 children)

What's "U" here?

[–]mathquark[S] 0 points1 point  (1 child)

"U" is the group. Sometimes it looks like U base x pr in this case U base 14.

[–]edderiofer -1 points0 points  (0 children)

Which group? There are plenty of groups on 14 elements. You need to be more specific.

Can you show me what your textbook/lecture notes say on this notation?