The Beard "I WAS bald!"), Elaine angrily throws his wig out the window, and the homeless guy picks it up. After the date, Elaine invites Robert to her apartment. Wig-less George tells Jerry he is again himself, and will continue seeing the bald woman; he then tells Jerry, who is going to take the lie detector test, that a lie is not a lie if he believes it. Later, Elaine triumphantly announces to Jerry that Robert has defected from his team and that the conversion went perfectly ("Sex and shopping"). Afterwards, Kramer is still doing police lineups. Jerry takes the lie detector
Sophus Lie them, and studying the corresponding generating vector fields (the so-called infinitesimal generators). The generators are subject to a linearized version of the group law, now called the commutator bracket, and have the structure of what is today called a Lie algebra. Hermann Weyl used Lie's work on group theory in his papers from 1922 and 1923, and Lie groups today play a role in quantum mechanics. However, the subject of Lie groups as it is studied today is vastly different from what the research by Sophus Lie was about and “among the 19th century masters, Lie's work is "in detail"