https://commalg.subwiki.org/w/index.php?action=history&feed=atom&title=Characteristic_subring 2026-08-05T11:04:06Z Revision history for this page on the wiki MediaWiki 1.41.2 https://commalg.subwiki.org/w/index.php?title=Characteristic_subring&diff=1987&oldid=prev 2009-02-06T19:05:15Z

<p>New page: {{curing-subring property}} ==Definition== A <a href="/w/index.php?title=Unital_subring&amp;action=edit&amp;redlink=1" class="new" title="Unital subring (page does not exist)">unital subring</a> of a <a href="/wiki/Commutative_unital_ring" title="Commutative unital ring">commutative unital ring</a> is termed a &#039;&#039;&#039;characteristic subring&#039;&#039;&#039; or &#039;&#039;&#039;automorphism-invariant subring&#039;&#039;&#039; if every...</p> <p><b>New page</b></p><div>{{curing-subring property}}<br /> <br /> ==Definition==<br /> <br /> A [[unital subring]] of a [[commutative unital ring]] is termed a &#039;&#039;&#039;characteristic subring&#039;&#039;&#039; or &#039;&#039;&#039;automorphism-invariant subring&#039;&#039;&#039; if every [[automorphism of a commutative unital ring|automorphism]] of the whole ring sends the subring to itself.<br /> <br /> ==Relation with other properties==<br /> <br /> ===Stronger properties===<br /> <br /> * [[Weaker than::Fully characteristic subring]]</div>

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