added operator correspondences
added operator correspondences


Former-commit-id: a163745ab6adc89d1816b3b139b862cfe24760bc [formerly e02bdedaacb168aa1264668a5a194520a6151fc9] [formerly 84f8790b45e04e5faaff2a48277bf5d31eaf1bbb]
Former-commit-id: e787df842bb52186e261056f65152e17397f3053
Former-commit-id: d009c83936cd48bf2f8f5081dfea7cd03f221db7
DEIB-GECO/PyGMQL,DEIB-GECO/PyGMQL