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my Characters return Julia's Ints
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@ -47,14 +47,15 @@ end
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#
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###############################################################################
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function central_projection(RG::GroupRing, chi::Function, T::Type=Rational{Int})
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function central_projection(RG::GroupRing, chi::AbstractCharacter,
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T::Type=Rational{Int})
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result = RG(T)
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result.coeffs = full(result.coeffs)
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dim = chi(RG.group())
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ord = Int(order(RG.group))
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for g in RG.basis
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result[g] = convert(T, (Int(dim)//ord)*Int(chi(g)))
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result[g] = convert(T, (dim//ord)*chi(g))
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end
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return result
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