### Some articles on *operators, operator*:

Interaction Picture

... Whereas in the other two pictures either the state vector or the

... Whereas in the other 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 SchrÃ¶dinger or the Heisenberg picture ... This is because time-dependent unitary transformations relate**operators**in one picture to the analogous**operators**in the others ...Operator Product Expansion

... In quantum field theory, the

... In quantum field theory, the

**operator**product expansion (OPE) is a Laurent series expansion of two**operators**... field theory one is interested in the result of physical observables represented by**operators**... at two points and, one can time order these**operators**in increasing time ...Frobenius Theorem (differential Topology) - Introduction

... a solution locally if, and only if, the

... a solution locally if, and only if, the

**operators**Lk satisfy a certain integrability condition known as involutivity ... of proof of the Frobenius theorem is to form linear combinations among the**operators**Li so that the resulting**operators**do commute, and then to show that there is a coordinate system yi for which these are ...Radio Amateur Civil Emergency Service - Participation

... officials who were not licensed amateur radio

... officials 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 ... 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 ...Noncommutative Logic - Noncommutativity in Logic - Pomset Logic

... by Christian RetorÃ© in a semantic formalism with two dual sequential

... by Christian RetorÃ© in a semantic formalism with two dual sequential

**operators**existing together with the usual tensor product and par**operators**of linear logic, the first logic proposed to have both ...