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The Yetter-Drinfeld category of the Hopf algebra over a field is a pre braided category. In this paper we prove this result for the weak Hopf algebra. We study the smash product and smash coproduct,… (More)
The energy level structures of Rydberg slates of Ru atom in 4d 7 ( 4 F) ns series and 4d 7 ( 4 F) nd series are measured by means of laser resonance excitation-electric field ionization method. The… (More)
The double crossed-product Bτ■bH by Doi Y. constructed and bialgebra B■bH by Reshetikhim N. constructed are well known in [1, 3], in this paper we find necessary and sufficient conditions for the… (More)
In this paper,(A,SA) and(H,SH) both are Hopf algebras on a field k.A is also an H-module algebra.We prove:If there is an algebra and H-comodule map i:H→ A such that iSH=SAi,we can get a subalgebra… (More)
Abstract We obtain the necessary and sufficient conditions for Radford's biproduct to be a braided Hopf algebra. As an application, a nontrivial example is given.
Based on the analysis of the status quo of the citizens' political consciousness,the author points out the necessity of constructing the political morality in our country.And as a conclusion,he… (More)
The way of forming Zn-Ni alloy coating is a newly developed anticorrosive technology.The corrosion resistance of the Zn-Ni alloy coatings is better than that of unalloyed zinc,which shows a trend of… (More)
In this article,the coalgebra factorization for a π-cleft extension and the algebra factorization for an η-cocleft extension are studied.Using the factorization theorem of relative Hopf modules,the… (More)
The three representatives are succession and improvement of Marxism under new circumstances.Only under socialist system can the three representatives be realized.