The proof given is essentially simpler than Lie 's own; and, though it was subsequently criticised by Engel, it is recognised as being substantially complete.
Ang patunay na ibinigay ay mahalagang mas simple kaysa humiga / magsinungaling 's sariling; at, kahit na ito ay sa dakong huli criticised by Engel, ito ay kinikilala bilang kalahatan kumpleto.