A surname.

plural of Hopf

plural of Hopf algebra

(mathematics) A structure that is simultaneously a unital associative algebra and a counital coassociative coalgebra, equipped with an antiautomorphism satisfying a certain property.

(topology) The simplest interlinkage of two loops; two interlinked rings.

plural of Hopf link

(mathematics) Relating to, or introduced by, Heinz Hopf (1894–1971), German mathematician.

(mathematics) A knot in a three-dimensional continuous unit vector field that cannot be unknotted without cutting

plural of hopfion

A kind of recurrent artificial neural network, providing a model for understanding human memory.