Weak Hopf Algebras and Regular Monoids
Received:April 28, 1996  
Key Word: weak Hopf algebra   weak autipode   group like element   regular monoid.  
Fund ProjectL:Supported by the National Natural Science Foundation of China (19501007)
Author NameAffiliation
Li Fang Dept. of Math.
Hangzhou University
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      Weak Hopf algebra is defined. The aim of this work is to study the relations between the weak antipode of a weak Hopf algelra and the monoid of group like elements. At first, the author shows some properties of weak Hopf algebras. And, for some weak Hopf algebras, some properties of the weak antipodes are given if the monoids of group like elements are inverse or orthodox semigroups. At end, the author gets a weak Hopf algebra whose monoid of group like elements is regular.
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