(linear algebra) A relation between two matrices of the same size, such that every row of one matrix is a linear combination of the rows of the other matrix, and vice versa. It is an equivalence relation.

(genetics) The concept that all cells in an organism contain identical genes.

(computing theory) Both NP-easy and NP-hard.

(electronics) a logic gate performing a Boolean logic equivalence operation; an XNOR gate.

The amount of energy released by an explosion expressed in terms of the amount of TNT needed to generate a similar explosion. Used especially to describe nuclear bombs.

(logic) A relation between two structures which have the property that every first-order formula is valid in one structure if and only if it is valid in the other.

plural of gram equivalent

(mathematics) A certain relationship defined between algebraic rings that preserves many ring-theoretic properties.

(mathematics) Exhibiting Morita equivalence.

plural of elementary equivalence