證訖

证讫
zhèngqì
  1. (mathematics) quod erat demonstrandum (QED)
  2. quod erat demonstrandum (QED)

Wiktionary

Entry Composition

1 證 zhèng
  1. certificate
  2. proof
  3. to prove
  4. to demonstrate
  5. to confirm
  6. variant of 症 zhèng
2 訖 qì finished