Q.E.D.
[ar] وهو المطلوب إثباته
[bg] Q.E.D.
[br] Quod erat demonstrandum
[ca] Quod erat demonstrandum
[ckb] کیو.ئی.دی.
[cs] Q.E.D.
[da] Quod erat demonstrandum
[de] Quod erat demonstrandum
[el] Όπερ έδει δείξαι
[eo] K.E.P.