kalmar/GroupRings.jl
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minimal constructor for GroupRing with no initialisation

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kalmar 2017-07-19 22:49:57 +02:00
parent 10ab783844
commit e8eaabc5d2
1 changed files with 2 additions and 16 deletions
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18
src/GroupRings.jl
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@ -102,22 +102,8 @@ function GroupRingElem{T<:Number}(c::AbstractVector{T}, RG::GroupRing)
return GroupRingElem{T}(c, RG)
end
function GroupRing(G::Group, pm::Array{Int,2})
size(pm,1) == size(pm,2) || throw("pm must be square, got $(size(pm))")
RG = GroupRing(G, initialise=false)
RG.pm = pm
return RG
end
function GroupRing(G::Group, basis::Vector)
basis_dict = reverse_dict(basis)
pm = try
create_pm(basis, basis_dict)
catch err
isa(err, KeyError) && throw("Products are not supported on basis")
throw(err)
end
return GroupRing(G, basis, basis_dict, pm)
function GroupRing(G::Group; init::Bool=false)
return GroupRing(G, collect(elements(G)), init=init)
end
function GroupRing(G::Group, basis::Vector, pm::Array{Int,2})