| In order to describe subobject ,there are so many monomorphismswhich are de?ned.The description of extremal monomorphism in FHaus topol-ogy category will be discussed in this thesis.Furthemore,we give a summaryof all kinds of monomorphisms in topology categories.Moreover,we analyze thecompactness of Lawson topology in Dcpo.Here is the outline of the thesis. 1.analyze and discuss the extremal monomorphism in FHaus topology cat-egory. 2.the summary of all kinds of monomorphisms in topology categories. 3.the compactness of Lawson topology in a continuous dcpo. |
