(mathematics) a vector whose value in every dimension is zero. i.e. ⃑0=<0,0,…,0> / (linear algebra) a vector 0 in a vector space V such that for any v∈V, 0+v=v

(computing) A signed magnitude representation of zero in which the sign bit indicates a positive number.

(computing) A signed magnitude representation of zero in which the sign bit indicates a negative number.

Alternative form of aleph-null

The scheduled time for the start of some event, especially a military operation; H-hour.

Of any system where all gains are offset by exactly equal losses.

(physics, quantum mechanics) The lowest possible energy of a given quantum mechanical system.

The strict policy of enforcing all the laws of a state, or the rules of an institution, and allowing no toleration or compromise even for first-time offenders or petty violations.

(game theory) A game (or a similar political or economic system) in which the gains of some players must equal the losses of others.

(chiefly Britain) subject to no value-added tax when sold (but the supplier can still recover VAT attributable to it)