Structural rule A famous structural rule is known as cut. Considerable effort is spent by proof theorists in showing that cut rules are superfluous in various logics. More precisely, what is shown is that cut is only (in a sense) a tool for abbreviating proofs, and does not add to the theorems that can be proved. The successful 'removal' of cut rules, known as "cut elimination", is directly related to the philosophy of "computation as normalization" (see Curry–Howard correspondence); it often gives a good indication of the complexity of deciding a given logic. Structural rule In proof theory, a structural rule is
Ja Rule with Ashanti, "Mesmerize" with Ashanti, and "Wonderful" with R. Kelly and Ashanti. During the 2000s, Ja Rule was signed to Murder Inc. Records, formerly known as The Inc. Records and led by Irv Gotti. Due to his hits with his collaborators, Ja Rule has earned four Grammy nominations, and has had six top-ten albums, two of which, "" (2000) and "Pain Is Love" (2001), topped the US "Billboard" 200. Ja Rule was born Jeffrey Bruce Atkins on February 29, 1976, to Debra and William Atkins in Hollis, a section of the Queens borough of New York City. Jeffrey's father left