Operators

Some articles on operators, operator:

Interaction Picture
... two pictures either the state vector or the operators carry time dependence, in the interaction picture both carry part of the time dependence of observables ... Equations that include operators acting at different times, which hold in the interaction picture, don't necessarily hold in the Schrödinger or the Heisenberg picture ... unitary transformations relate operators in one picture to the analogous operators in the others ...
Operator Product Expansion
... In quantum field theory, the operator product expansion (OPE) is a Laurent series expansion of two operators ... result of physical observables represented by operators ... the result of making two physical observations at two points and, one can time order these operators in increasing time ...
Noncommutative Logic - Noncommutativity in Logic - Pomset Logic
... logic was proposed by Christian Retoré in a semantic formalism with two dual sequential operators existing together with the usual tensor product and par operators of linear logic, the first ...
Radio Amateur Civil Emergency Service - Participation
... who were not licensed amateur radio operators, limitations on the duration of non-emergency operation and stations that might be contacted were incorporated into part 97.407 ... under the RACES rules would now use licensed amateur radio operators as control operators ... In daily practice, most amateur radio operators enrolled with their local government for possible operations under the RACES rules are also members of the Amateur Radio Emergency Service ...