Package cc.redberry.core.transformations.substitutions

Examples of cc.redberry.core.transformations.substitutions.SubstitutionTransformation

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                    addAll(varIndices.getInverted().getAllIndices().copy(), allFreeArgIndices),
                    new int[0]);
            ProductBuilder builder = new ProductBuilder(0, length);
            for (i = 0; i < length; ++i)
                builder.put(createMetricOrKronecker(allFreeArgIndices[i], allFreeVarIndices[i]));
            derivative = new SubstitutionTransformation(symmetric, builder.build()).transform(derivative);
            this.derivative = derivative;
            this.freeVarIndices = var.getIndices().getFree().getInverted().getAllIndices().copy();
            this.allFreeFrom = addAll(allFreeArgIndices, freeVarIndices);
        }
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        final Expression[] scalarSubs = new Expression[tensorSubstitutions.size()];
        i = -1;
        for (Map.Entry<Tensor, Tensor> entry : tensorSubstitutions.entrySet())
            scalarSubs[++i] = Tensors.expression(entry.getKey(), entry.getValue());
        SubstitutionTransformation fullSub = new SubstitutionTransformation(scalarSubs, true);
        for (i = 0; i < equations.length; ++i)
            equations[i] = (Expression) fullSub.transform(equations[i]);


        /*if (scalarSubs.length != 0) {
            StringBuilder scalarsString = new StringBuilder().append('[');
            for (Expression sub : scalarSubs)
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                            addAll(varIndices.getInverted().getAllIndices().copy(), allFreeArgIndices)),
                    new int[0]);
            ProductBuilder builder = new ProductBuilder(0, length);
            for (i = 0; i < length; ++i)
                builder.put(createMetricOrKronecker(allFreeArgIndices[i], allFreeVarIndices[i]));
            derivative = new SubstitutionTransformation(symmetric, builder.build()).transform(derivative);
            this.derivative = derivative;
            this.freeVarIndices = var.getIndices().getFree().getInverted().getAllIndices().copy();
            this.allFreeFrom = addAll(allFreeArgIndices, freeVarIndices);
        }
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        final Expression[] scalarSubs = new Expression[tensorSubstitutions.size()];
        i = -1;
        for (Map.Entry<Tensor, Tensor> entry : tensorSubstitutions.entrySet())
            scalarSubs[++i] = Tensors.expression(entry.getKey(), entry.getValue());
        SubstitutionTransformation fullSub = new SubstitutionTransformation(scalarSubs, true);
        for (i = 0; i < equations.length; ++i)
            equations[i] = (Expression) fullSub.transform(equations[i]);


        if (scalarSubs.length != 0) {
            StringBuilder scalarsString = new StringBuilder().append('[');
            for (Expression sub : scalarSubs)
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Related Classes of cc.redberry.core.transformations.substitutions.SubstitutionTransformation

  • cc.redberry.core.solver.ExternalSolver
  • cc.redberry.core.tensor.Expression
  • cc.redberry.core.transformations.DifferentiateTransformation$SymmetricDifferentiationRule
  • cc.redberry.physics.feyncalc.DiracTrace
  • cc.redberry.physics.utils.InverseTensor
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