About 30,000 people attended last year, said John W. Olcott, the president of the trade group, which represents operators and suppliers of private corporate aircraft.

The hats represents operators in quantum theory.

Because so many students deal with classmates who are representing operators in return for a free trip, or better, the field has been classically fertile for fraud.

He pushed for equal wages for the women in his union, which represented operators, telephone installers, technicians and equipment makers.

Some representatives of the industry, including the organization representing independent yellow-cab operators, have already criticized it.

This association represents cargo carriers and logistical operators.

Early opposition has come from a trade group that represents charter, air taxi and other operators.

For a source account, the Designated Representative, who represents the owners and operators of that unit, performs this function.

This idea can be used to represent operators on Hilbert spaces, for example.

The Pacific Maritime Association represents shipping companies and terminal operators.