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splaplacian_coeff -> splaplacian returns GroupRingElem

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kalmar 2017-06-05 13:18:46 +02:00
parent b35ee6bfdb
commit 8b0033da58
1 changed files with 4 additions and 5 deletions
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9
src/sdps.jl
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@ -38,12 +38,11 @@ end
constraints_from_pm(pm) = constraints_from_pm(pm, maximum(pm))
function splaplacian_coeff(S, basis, n=length(basis))
result = spzeros(n)
result[1] = float(length(S))
function splaplacian(RG::GroupRing, S, basis, n=length(basis))
result = RG(spzeros(n))
result[RG.group()] = float(length(S))
for s in S
ind = findfirst(basis, s)
result[ind] += -1.0
result[s] += -1.0
end
return result
end