摘要:
代数系统的定义;
么元、零元、逆元;
子代数;
同态;
同态图解、同构;
自同态、同态像与陪域、前域的关系;
同余关系;
商代数,积代数; 阅读全文
摘要:
词序1 He speaks English very well;
词序2 always/usually/often;
still yet already;
Give me that book! Give it to me!;
连接词 and but or so because; 阅读全文