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The past few days I have noticed several instances where

interrupting GAP left me with a crippled version of GAP.

One more instance happened a moment ago: I said

gap> PrintRec(N);

where N was some permutation group

[B.t.w., PrintRec does not occur in the on-line help,

only in the chapter About Gap]

and this produced much more output than I liked.

So, I gave ^C. Afterwards, N was partially mangled:

gap> N; ~ gap> gap> PrintRec(N); ~gap> gap> Size(N); 729 gap> Print(N); ~gap> c in N; Error, Record: right operand must have '~.operations.in'

Let me take this opportunity to ask a question.

Do there exist facilities to regard an elementary abelian group

as a vector space (and vice versa)?

Do there exist facilities to go back and forth between a (permutation)

group p^n:G with elem. ab. subgroup p^n and a matrix group G

(with matrices of order n over GF(p))?

Andries Brouwer

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