In 1946, Hip Groenewold demonstrated that a general systematic correspondence between quantum commutators and Poisson brackets could not hold consistently.
Commutation of sentence | Canonical hours | Tithe Commutation Act 1836 | Canonical Ltd. | Mourt's Relation | Equivalence relation | Tully–Fisher relation | Tully-Fisher relation | The Descent of Man, and Selection in Relation to Sex | Same Height Relation | Non-canonical books referenced in the Bible | Canonical form | canonical form | Canonical correlation |