kalmar/GroupRings.jl
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simple constructor from support of GroupRingElem

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kalmarek 2018-08-13 19:33:19 +02:00
parent 29f5bc1ee7
commit 4dd2c02a4c
1 changed files with 3 additions and 6 deletions
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src/GroupRings.jl
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@ -153,12 +153,9 @@ function (RG::GroupRing){T<:Number}(x::AbstractVector{T})
return result return result
end end
function (RG::GroupRing{Gr,T}){Gr<:Group, T<:GroupElem}(V::Vector{T}, function (RG::GroupRing{Gr,T}){Gr<:Group, T<:GroupElem}(V::Vector{T}, S::Type=Int)
S::Type=Rational{Int}; alt=false)
res = RG(S) res = RG(S)
for g in V for g in V
c = (alt ? sign(g)*one(S) : one(S))
res[g] += c/length(V)
end end
return res return res
end end