Last Updated：2026/01/01
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A subring of 𝔅 containing the ring o of integral elements of the field k_0(𝜋), distinct from 𝔅, and not contained in any other subring of 𝔅 distinct from 𝔅, is called a maximal ring of the algebra 𝔅. In a division algebra, the only maximal ring is the ring of integral elements.
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