It was during the winter of 1873-74 that Lie began to develop systematically what became his theory of continuous transformation groups, later called Lie groups leaving behind his original intention of examining partial differential equations.
Ito ay sa panahon ng taglamig ng 1873-74 na humiga / magsinungaling ay nagsimulang bumuo systematically kung ano ang naging kanyang teorya ng patuloy na pagbabagong-anyo grupo, mamaya na tinatawag na humiga / magsinungaling grupo ng umaalis sa likod ng kanyang orihinal na layunin ng pagsusuri bahagyang kaugalian equation.