The Barred Subject

Not long after the 1957 paper in which the term first appears, in the seminar of 1957-8, Lacan goes on to use the bar to strike through his algebraic symbols S and A in a manner reminiscent of Heidegger's practice of crossing out the word "being."[2]The bar is used to strike through the S to produce, , the "barred subject'." The bar here represents the division of the subject by language, the split. Thus whereas before 1957 S designates the subject (e.g. in schema L), from 1957 on S designates the signifier and designates the (divided) subject.