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Given any non-empty systems of sets S, there is a unique ring P containing S and contained in every ring containing S. The ring P is called the minimal ring generated by the system S & can be denoted as R(S).

Question: what does mean by "there is a unique ring P containing S", does it mean that P is in S ? if I am wrong then is P a maximal set of S?

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# Question on Ring .Help Please!

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