@Test
public void test7() {
Tensor t = parse("A*(B+E*(R+K*U))", "^i", "_j");
Indices indices = ParserIndices.parseSimple("^i_j");
Tensor e = Tensors.parse("A^i_a*(B^a_j+E^a_b*(R^b_j+K^b_c*U^c_j))");
assertIndicesParity(t.getIndices().getFree(), indices);
assertEqualsExactly(t, e);
}
@Test
public void test13() {
Tensor t = parse("A+B", "^i", "_i", "A");
Tensor e = Tensors.parse("A^i_i+B");
assertEqualsExactly(t, e);
}