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
Rule/Sparkle the Honda Zest Spark, while "Rule" was used as the international theme song for the 2009 adventure film "Dragonball Evolution". "Rule/Sparkle" was released on February 25, 2009 by Avex Trax and Avex Taiwan in three different versions: two different CD editions and a CD and DVD version. Both CD version features two remixes of "Rule" while the first version features two remixes of her single "Green" and the second features two remixes of her single "Days". Akira Toriyama, the creator and manga artist for the "Dragon Ball" series, was commissioned by Avex Trax to draw an illustration of Hamasaki, which