def test_trivially_commutes_both_hopping_and_number_on_same_modes(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('4^ 1'),
FermionOperator('4^ 1^ 4 1')))
def test_no_trivial_commute_left_hopping_operator(self):
self.assertFalse(
trivially_commutes_dual_basis(FermionOperator('3^ 2'),
FermionOperator('3^ 3')))
def test_trivially_commutes_both_hopping_annihilate_same_mode(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('4^ 1'),
FermionOperator('3^ 1')))
def test_trivially_commutes_one_double_number_operators(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('3^ 2^ 3 2'),
FermionOperator('3^ 3')))
def test_trivially_commutes_nonintersecting_single_number_operators(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('2^ 2'),
FermionOperator('3^ 3')))
def test_trivially_commutes_both_single_number_operators(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('3^ 3'),
FermionOperator('3^ 3')))
def test_no_trivial_commute_with_intersection(self):
self.assertFalse(
trivially_commutes_dual_basis(FermionOperator('2^ 1'),
FermionOperator('5^ 2^ 5 2')))
def test_trivially_commutes_no_intersection(self):
self.assertTrue(
trivially_commutes_dual_basis(FermionOperator('3^ 2^ 3 2'),
FermionOperator('4^ 1')))