> < ^ Date: Tue, 06 Aug 1996 13:34:01 +0200
> < ^ From: Juergen Ecker <juergen.ecker@algebra.uni-linz.ac.at >
> ^ Subject: troubles with PositionWord

Dear GAP-Forum,

it seems to me that the function PositionWord does not always
work correctly. The following looks quite strange to me, but maybe I
do not expect the right thing.

a := AbstractGenerator("a");;
b := AbstractGenerator("b");;

PositionWord(a*b*a,b,1);

yields the correct result

2

but

ag := AbstractGenerators("a",2);; a1 := ag[1];; a2 := ag[2];;

PositionWord(a1*a2*a1,a2,1);

signals an error:

Error, usage: PositionWord( <word>, <sub>[, <from>] )

greetings

Juergen Ecker
Universitaet Linz
Inst. f. Math.
Austria


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