Gendai budō Gendai budō , literal meaning "modern budo", or , literally meaning "new budo" are both terms referring to modern Japanese martial arts, which were established after the Meiji Restoration (1866–1869). Koryū are the opposite of these terms referring to ancient martial arts established before the Meiji Restoration. Any martial art created after the Meiji Restoration of 1868 is Gendai Budo. Koryu Budo are schools of budo that predate 1868. Some examples of Gendai budō are aikido, judo, karate and shorinji kempo. The Japanese art of sumo is often defined as a gendai budō. This definition is incorrect as sumo is
Orthogonality (term rewriting) hand side of each reduction rule shares no function symbol in common, so there is no overlap. Orthogonal term rewriting systems are confluent. Orthogonality (term rewriting) Orthogonality as a property of term rewriting systems describes where the reduction rules of the system are all left-linear, that is each variable occurs only once on the left hand side of each reduction rule, and there is no overlap between them. Orthogonal term rewriting systems have the consequent property that all reducible expressions (redexes) within a term are completely disjoint -- that is, the redexes share no common function symbol. For example, the