anti-isomorphism

anti-isomorphism

[‚an·tē‚ī·sə′mȯr‚fiz·əm] (mathematics) A one-to-one correspondence between two rings, fields, or integral domains such that, if x ′ corresponds to x and y ′ corresponds to y, then x ′+ y corresponds to x + y, but y ′ x ′ corresponds to xy.