Which one is the most natural?
- Such set is called an empty set and it is denoted by 0.
- Such set is called an empty set and is denoted by 0.
- Such set is called an empty set and denoted by 0.
Which one is the most natural?
While the rest of them quibble, I will summarize: #2 is best, but you need to insert "a" — "Such a set". Clear?
Such a set is called an empty set and is denoted by 0.sounds best to me. – user428517 Dec 22 '14 at 23:08Such sets are called empty sets and are denoted by 0. plurality is not needed for conveying the intended meaning (and i would not write the sentence this way), but it is "correct" english as well. – user428517 Dec 22 '14 at 23:12