return tensor.getFactory().create(newSumElements); else return tensor;
return tensor.getFactory().create(rebuild);
if (a == tensor.get(0) && b == tensor.get(1)) return tensor; return tensor.getFactory().create(a, b); Tensor arg = renameIndicesOfFieldsArguments(tensor.get(0), forbidden); if (arg == tensor.get(0)) return tensor; return tensor.getFactory().create(arg);