"gain argument" is not a correct or commonly used phrase in written English.
It is possible that it may have been intended as "key argument" or "main argument," but without more context it is difficult to determine its intended meaning. Example: The essay's gain argument was that technology has a negative impact on interpersonal communication skills.
The approach proposed in this paper uses a combination of small-gain arguments and adaptive control techniques for the design of a state-feedback controller that achieves asymptotic tracking of a family of velocity and flight-path angle reference trajectories belonging to a given class of vehicle maneuvers, in spite of model uncertainties.
The allowable PID controller parameters are determined from a small gain type of argument used earlier for finite dimensional plants.
If the Port Authority signaled that it was willing to have Mr. Silverstein rebuild less space, the insurers could gain a significant argument against paying Mr. Silverstein the full amount he is requesting.
The Northern Irish suddenly face the unwelcome prospect of physical borders returning to the frontier between the five provinces in the north and the Republic of Ireland in the south; Scottish nationalists gain a new argument in favour of distancing themselves from England and Wales; and the Spanish see new leverage in their efforts to secure control over Gibraltar.
To win this argument, gain this influence, and shift boatloads of capital to clean energy, we must remain relentlessly persistent, energizing individuals and institutions to demand investments in Earth's future and not its destruction.
The argument gained traction.
Increasingly, throughout the late 1990s and into the new century, this argument gained sway.
That argument gained credence with investors, helping to propel Apple's market value past Microsoft's.
"Arguments gain traction in the legal system over time," he said.
In the case of children in failing public schools, this argument gains moral urgency.
