quod erat demonstrandum

短语

要说明或证明的

词形变化

quae erant demonstranda 复数 quae erant demonstranda

别名

Q.E.D.

释义与例句

phr.
  1. 1.

    which was to be proved; which was to be demonstrated.

    证明完毕

词源

Borrowed from Latin quod erat dēmōnstrandum (“that which was to be proved”), calqued from Ancient Greek ὅπερ ἔδει δεῖξαι (hóper édei deîxai, “precisely what was required to be proved”).

来源：wiktionary