End-of-proof letters Crossword Clue

A warm welcome to all crossword lovers!
Its time to solve "End-of-proof letters" crossword clue for today's "Thomas Joseph – King Feature Syndicate" daily crossword.

Understanding Today's Crossword Puzzle

Today's clue "End-of-proof letters" leads to the answer "QED." Here's why this answer fits the clue:

In the world of mathematics and logic, "QED" is commonly used at the end of a proof to signify quod erat demonstrandum, which is Latin for "that which was to be demonstrated." This phrase indicates that the proof has been completed and the statement or theorem has been proven to be true.

Here's how the connection between the clue and the answer works:

1. The clue mentions "end-of-proof," which hints at the conclusion or final step in proving a mathematical or logical argument.
2. "Letters" in the clue suggest that the answer is a combination of characters or symbols commonly seen in mathematical contexts.
3. "QED" precisely fits the context of being used at the end of a proof to signify the completion of the argument and the establishment of the intended conclusion.

Therefore, in today's crossword puzzle, "End-of-proof letters" appropriately points to the answer "QED" due to its specific usage in mathematics and logic to denote the end of a proof.

Definition of "QED"

quantum electrodynamics.

 The Crossword clue "End-of-proof letters" published 7 time/s & has 1 answer/s. 

Crossword	Date	Answer
Thomas Joseph – King Feature Syndicate	4 February 2025	QED
Universal	3 May 2016	QED
L.A. Times Daily	25 March 2012	QED
Wall Street Journal	26 October 2001	QED