gap> G:=Group([ (2,11,20)(3,10,19)(4,9,12)(5,8,13)(6,15,17)(7,14,18), (2,20)(3,4)(5,7)(8,18)(9,19)(10,12)(13,14)(15,17), (1,2)(3,20)(6,18)(7,19)(8,12)(9,11)(13,15)(16,17) ]);
Group([ (2,11,20)(3,10,19)(4,9,12)(5,8,13)(6,15,17)(7,14,18), (2,20)(3,4)(5,7)(8,18)(9,19)(10,12)(13,14)(15,17), (1,2)(3,20)(6,18)(7,19)(8,12)(9,11)
(13,15)(16,17) ])
gap> H:=Group([ (1,2,3,4,5), (3,4,5), (6,7) ]);
Group([ (1,2,3,4,5), (3,4,5), (6,7) ])
gap> IsomorphismGroups(G,H);
Error, no method found! For debugging hints type ?Recovery from NoMethodFound
Error, no 1st choice method found for `Representative' on 1 arguments
The 1st argument is 'fail' which might point to an earlier problem
at /usr/share/gap/lib/methsel2.g:250 called from
Representative( of ) at /usr/share/gap/lib/morpheus.gi:538 called from
AssignNiceMonomorphismAutomorphismGroup( A, G ); at /usr/share/gap/lib/morpheus.gi:2565 called from
NiceMonomorphism( obj1 ) at /usr/share/gap/lib/grpnice.gi:313 called from
ClosureGroup( G, gen ) at /usr/share/gap/lib/grp.gi:2617 called from
ClosureGroup( G, obj ) at /usr/share/gap/lib/grp.gi:2644 called from
... at *stdin*:3
Observed behaviour
With 4.13.0 or current master:
Expected behaviour
With 4.12.2:
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