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Let RG denote the group ring of a group G over a commutative ring with unity R. Given a homomorphism σ:G → {± 1} and an involution ϕ of the group G, an oriented invoultion σϕ of RG is defined in a… (More)

Let R be a commutative ring with unity and let G be a group. The group ring RG has a natural involution that maps each element g ∈ G to its inverse. We denote by RG − the set of skew symmetric… (More)

- Gurmeet K. Bakshi, Osnel Broche Cristo, +6 authors Inneke Van Gelder
- 2007

The title “Wedderga” stands for “WEDDERburn decomposition of Group Algebras. This is a GAP package to compute the simple components of the Wedderburn decomposition of semisimple group algebras of… (More)

The first author has been partially supported by FAPESP and CAPES of Brazil and the second author
by Fundacion Seneca of Murcia.

Let R be a commutative ring with unity and let G be a group. The group ring RG has a natural involution that maps each element of G to its inverse. We denote by RGþ the set of symmetric elements… (More)