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
Flemming Rule from its welfare program in what became known as the "Louisiana Incident." This was done because the children had been born outside of wedlock, and were considered illegitimate by the state. Similar types of welfare denial had occurred in other states. In response to this, the Louisiana Department of Health, Education and Welfare, administrator of the income assistance program, implemented the Fleming Rule. A 1997 article by Claudia Lawrence-Webb claimed that the child welfare system had problems fairly representing children of color and signified this problem was due to the Fleming Rule. Webb suggested that the rule was implemented poorly,