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QED

QEDinterjection

Translations

что и требовалось доказать

The proof is complete, QED.

Доказательство завершено, что и требовалось доказать.

Definitions

Used to indicate that something has been definitively demonstrated, especially at the end of a logical or mathematical proof.

After showing the triangles were congruent, she wrote QED to close the proof.

(informal) Said to emphasize that a point has been conclusively settled.

"You said we’d be late, but we arrived five minutes early—QED!"