(combinatorics) A subset of a group such that any element of the group can be expressed as the difference (or the quotient) of two elements in such subset.

(attributive) spot the difference

(electronics) a logic gate whose output is TRUE when the two inputs are different; a Boolean logic XOR gate.

plural of difference set

Used other than figuratively or idiomatically: see what, is, the, difference. / (idiomatic) The difference does not matter; so what?

plural of common difference

(mathematics) An equation involving an ordered sequence of real numbers (a_nₙ₌₁ ᪲) and some of its differences, where the first difference is defined as 𝛥(a_n)=a_n+1-a_n, and the kᵗʰ difference is defined recursively as 𝛥ᵏ(a_n)=𝛥ᵏ⁻¹(a_n+1)-𝛥ᵏ⁻¹(a_n),.

A great or insurmountable difference.

In a financial transaction, to settle on an amount midway between the offer and the asking price.

plural of symmetric difference