I suggest you look up the accepted English language meaning!
https://www.bing.com/ck/a?!&&p=e83d201d784f6a4dJmltdHM9MTY5OTY2MDgwMCZpZ3VpZD0yYTNmOGE5ZC1lM2ZiLTYyYTktMDE5ZS05OTIyZTJhMTYzZGEmaW5zaWQ9NTc2Mw&ptn=3&ver=2&hsh=3&fclid=2a3f8a9d-e3fb-62a9-019e-9922e2a163da&psq=qed+meaning&u=a1aHR0cHM6Ly9lbi53aWtpcGVkaWEub3JnL3dpa2kvUS5FLkQu&ntb=1
English equivalent[edit]
There is no common formal English equivalent, although the end of a proof may be announced with a simple statement such as “thus it is proved,” "this completes the proof", "as required", "as desired", "as expected", "hence proved", "ergo", "so correct", or other similar locutions.