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store basis in hashtable while creating product matrix
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@ -5,13 +5,16 @@ using GroupAlgebras
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function create_product_matrix(basis, limit)
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product_matrix = zeros(Int, (limit,limit))
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basis_dict = Dict{Array, Int}(x => i
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for (i,x) in enumerate(basis))
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for i in 1:limit
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x_inv::eltype(basis) = inv(basis[i])
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Threads.@threads for j in 1:limit
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for j in 1:limit
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w = x_inv*basis[j]
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index = findfirst(basis, w)
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index ≠ 0 || throw(ArgumentError("Product is not supported on basis: $w"))
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product_matrix[i,j] = index
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product_matrix[i,j] = basis_dict[w]
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# index = findfirst(basis, w)
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# index ≠ 0 || throw(ArgumentError("Product is not supported on basis: $w"))
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# product_matrix[i,j] = index
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end
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end
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return product_matrix
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