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U+220E, ∎
(LaTeX: \blacksquare)
END OF PROOF

[U+220D]
Mathematical Operators
[U+220F]
See also: [U+25A0 BLACK SQUARE] and [U+23F9 BLACK SQUARE FOR STOP]

Translingual[edit]

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Etymology[edit]

Introduced into mathematical usage by Paul Halmos, modeled after the end sign (a printer’s ornament or dingbat used to indicate the end of an article or story) found in popular print media.

Symbol[edit]

  1. (mathematics) QED.

Usage notes[edit]

The symbol itself is called a tombstone or halmos in English.