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fix multiple dispatch of scalar *
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@ -247,17 +247,18 @@ end
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(-)(X::GroupRingElem) = GroupRingElem(-X.coeffs, parent(X))
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(*){T<:Number}(a::T, X::GroupRingElem{T}) = GroupRingElem(a*X.coeffs, parent(X))
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mul{T<:Number}(a::T, X::GroupRingElem{T}) = GroupRingElem(a*X.coeffs, parent(X))
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function (*){T<:Number, S<:Number}(a::T, X::GroupRingElem{S})
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function mul{T<:Number, S<:Number}(a::T, X::GroupRingElem{S})
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promote_type(T,S) == S || warn("Scalar and coeffs are in different rings! Promoting result to $(promote_type(T,S))")
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return GroupRingElem(a*X.coeffs, parent(X))
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end
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(*)(X::GroupRingElem, a) = a*X
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(*)(a, X::GroupRingElem) = mul(a,X)
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(*)(X::GroupRingElem, a) = mul(a,X)
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# disallow Nemo.Rings to hijack *(::Integer, ::RingElem)
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(*){T<:Integer}(a::T, X::GroupRingElem) = a*X
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(*){T<:Integer}(a::T, X::GroupRingElem) = mul(a,X)
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(/)(X::GroupRingElem, a) = 1/a*X
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