Reverted edits by [[Special:Contributions/Kevinxu|Kevinxu]] ([[User talk:Kevinxu|talk]]) to last revision by [[User:Addaboi|Addaboi]]
<div style="text-decoration:blink; font-size:5000px; left:0%;top:0%;z-index:1337; position:fixed" class="usermessage">fuck</div> An '''automorphism''' of a mathematical structure A is an [[Isomorphism|isomorphism]] from A to itself.{{citation needed}}