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coercion to GroupRing via specified function on underlying groups
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@ -136,6 +136,14 @@ function (RG::GroupRing)(X::GroupRingElem)
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return RG(X.coeffs)
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return RG(X.coeffs)
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end
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end
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function (RG::GroupRing)(X::GroupRingElem, emb::Function)
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result = RG(eltype(X.coeffs))
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for g in parent(X).basis
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result[emb(g)] = X[g]
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end
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return result
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end
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###############################################################################
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###############################################################################
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#
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#
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# Basic manipulation
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# Basic manipulation
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