These early proof of concept languages were rather inefficient and not suitable for applications.

The earliest proof of occupation was the Roman Villa located under the church.

An earlier proof of the theorem was given by Church and Rosser.

The sooner the better; you might even send me early proofs as they are sent out, to give me more incubation.

The earliest proof of Båhus lands being in Norway's hands is from 11th century.

Although a relatively minor action, the tanks had been decisive and the engagement was early proof of their effectiveness in co-operation with the infantry.

Several early proofs were based on delicate trigonometric calculations.

"I don't know whether it's a glove or a hand," says Mina, showing early proof of a discriminating nature.

They are somewhat less transparent than the earlier proofs, relying as they do on hypergeometric series.

It was set up to be transmitted on receipt of the earliest possible proof that it would be received.