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Output of \qed symbol in LatEx within a proof environment at the end of an enumerate statement - Stack Overflow
What's the proper way to end a mathematical proof? Is □ (blacksquare symbol) acceptable in place of 'QED'? - Quora
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math mode - How to place qed symbol at the end of an equation using eqnarray* enviroment - TeX - LaTeX Stack Exchange
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equations - Erratic position of QED symbol at the end of proof environment using SIAM template - TeX - LaTeX Stack Exchange
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align - qed when `cases` is the last element of the proof-ending display with svmono class without amsthm and ntheorem - TeX - LaTeX Stack Exchange
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