Examples of cc.redberry.core.tensor.SimpleTensor

cc.redberry.core.tensor.SimpleTensor
Implementation of simple tensor. @author Dmitry Bolotin @author Stanislav Poslavsky @since 1.0

        generator = new SymbolsGenerator(name);
    }


    @Override
    public SimpleTensor take() {
        SimpleTensor st = generator.take();
        generated.add(st);
        return st;
    }

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            for (Tensor t : tf)
                content[i++] = tensor2AST(t);
            return new ParseTokenTensorField(tf.getIndices(), tf.getStringName(), content, tf.getArgIndices());
        }
        if (tensor instanceof SimpleTensor) {
            SimpleTensor st = (SimpleTensor) tensor;
            return new ParseTokenSimpleTensor(st.getIndices(), st.getStringName());
        }
        if (tensor instanceof Complex)
            return new ParseTokenNumber((Complex) tensor);


        ParseToken[] content = new ParseToken[tensor.size()];

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            throw new IllegalArgumentException();
        int i;
        for (i = 0; i < actualInput; ++i) {
            if (!(inputValues[i].get(0) instanceof SimpleTensor))
                throw new IllegalArgumentException();
            SimpleTensor st = (SimpleTensor) inputValues[i].get(0);
            NameDescriptor nd = CC.getNameDescriptor(st.getName());
            if (!nd.getName(null).equals(getStringInputName(i)))
                throw new IllegalArgumentException();
        }
        for (; i < INPUT_VALUES_GENERAL_COUNT; ++i)
            if (inputValues[i] != null)

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    public static Tensor applyIndexMapping(Tensor tensor, IndexMapper mapper) {
        TreeTraverseIterator iterator = new TreeTraverseIterator(tensor, TraverseGuide.EXCEPT_FUNCTIONS_AND_FIELDS);
        TraverseState state;
        SimpleIndices oldIndices, newIndices;
        SimpleTensor simpleTensor;
        while ((state = iterator.next()) != null) {
            if (state == TraverseState.Leaving)
                continue;
            if (!(iterator.current() instanceof SimpleTensor))
                continue;
            simpleTensor = (SimpleTensor) iterator.current();
            oldIndices = simpleTensor.getIndices();
            newIndices = oldIndices.applyIndexMapping(mapper);
            if (oldIndices != newIndices)
                if (simpleTensor instanceof TensorField)
                    iterator.set(Tensors.setIndicesToField((TensorField) simpleTensor, newIndices));
                else

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        return setMandelstam(tt);
    }


    public static Expression[] setMandelstam(Tensor[][] momentums) {
        checkMandelstamInput(momentums);
        SimpleTensor s = parseSimple("s"), t = parseSimple("t"), u = parseSimple("u");


        Expression[] result = new Expression[10];
        int i;
        // (k1,k1) = m1^2, (k2,k2) = m2^2, (k3,k3) = m3^2, (k4,k4) = m4^2
        for (i = 0; i < 4; ++i)

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    private void checkConsistency() {
        int i;
        for (i = 0; i < actualInput; ++i) {
            if (!(inputValues[i].get(0) instanceof SimpleTensor))
                throw new IllegalArgumentException();
            SimpleTensor st = (SimpleTensor) inputValues[i].get(0);
            NameDescriptor nd = CC.getNameDescriptor(st.getName());
            if (!nd.getName(null).equals(getStringInputName(i)))
                throw new IllegalArgumentException();
        }
        for (; i < INPUT_VALUES_GENERAL_COUNT; ++i)
            if (inputValues[i] != null)

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Related Classes of cc.redberry.core.tensor.SimpleTensor

cc.redberry.core.indices.SimpleIndices

cc.redberry.core.parser.ParserSimpleTensor

cc.redberry.core.parser.ParseUtils

cc.redberry.core.performance.kv.OneLoopInput

cc.redberry.core.tensor.random.RandomProduct

cc.redberry.core.tensor.random.RandomTensor

cc.redberry.core.tensor.random.TRandom

cc.redberry.core.tensorgenerator.SymbolsGeneratorWithHistory

cc.redberry.core.transformations.ApplyIndexMapping

cc.redberry.core.utils.LocalSymbolsProvider

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