<div class="brief" style="margin:0px;padding:0px;color:#666666;font-family:"background-color:#FFFFFF;"> <div class="wx-tit" style="margin:0px;padding:0px;text-align:center;"> <h1 style="text-align:left;font-size:24px;color:#333333;font-weight:normal;vertical-align:middle;"> <span style="font-family:SimSun;"></span><span style="font-size:12px;">正则幂环的同态与同构</span> </h1> </div> </div>