=yUg ⊗U ′ g ′;
نویسنده
چکیده
1. Let G be a finite group. Let VecG be the category whose objects are C-vector bundles on G which are G-equivariant for the conjugation action of G on G. For U ∈ VecG let Ug denote the fibre of U at g ∈ G; the G-equivariant structure on U is given by isomorphisms ψ x : Uy −→ Uxyx−1 for any x, y ∈ G. For U,U ′ ∈ VecG we define U ∗U ′ ∈ VecG as follows: for y ∈ G, we have (U ∗U )y = ⊕(g,g′)∈G×G;gg′=yUg⊗U ′ g′ ; the G-equivariant structure on U ∗ U ′ is defined by
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تاریخ انتشار 2003