Free Product of Normal Bands and Right Quasinormal Bands
BI Xiao-dong · Science Technology and Engineering · 2007
The relation between free product of normal bands and free product of right quasinormal bands is set up,further the existence of the free product of normal bands is proved.The concept of commutative free product is also set up and the relation between free product of semilattices and commutative free product is considered.