Physics – Mathematical Physics
Scientific paper
2007-05-30
J.Math.Phys.48:073502,2007
Physics
Mathematical Physics
13pages, no figure. Accepted by J.Math.Phys
Scientific paper
10.1063/1.2747614
In light of $\phi$-mapping topological current theory, the inner topological structure of Hopf invariant is investigated. It is revealed that Hopf invariant is just the winding number of Gauss mapping. According to the inner structure of topological current, a precise expression for Hopf invariant is also presented. It is the total sum of all the self-linking and all the linking numbers of the knot family.
Duan Yi-Shi
Li Renwei
Ren Ji-Rong
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