Question 1208676
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I think you meant to say Ø instead of { Ø }
There's a slight difference between these two sets.
They are <u>not</u> the same.


See this page
<a href="https://math.stackexchange.com/questions/3479883/is-or-%c3%98-an-empty-set">https://math.stackexchange.com/questions/3479883/is-or-%c3%98-an-empty-set</a>
In that link, the user MPW perhaps has the best answer. 
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