I found this today, probably a bug in MultiSeries :- series
> # Maple 11
# MultiSeries problem
> restart; with(MultiSeries):
> a2 := log(sinh(log(sinh(-log(z)/2))))+log(z)/2+2*log(2);
> limit(a2/z,z=0);
> plot(a2/z,z=-0.2..0.2,-10..0);
> series(a2,z=0); # this is correct: -5 z -33/2 z^2 ...
> a3 := simplify(a2);
> series(a3,z=0); # but this should be the same!
> plot(a3/z,z=-0.2..0.2,-10..0);
> # so it seems a3 itself is OK, but the series is wrong
>
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