# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = Add(_t, _s)
sub_expr3 = Add(_t, one)
sub_expr4 = Interval(one, _t)
sub_expr5 = Interval(one, sub_expr2)
sub_expr6 = Interval(sub_expr3, sub_expr2)
sub_expr7 = MultiQubitElem(element = Gate(operation = QPE1(_U, _t), part = sub_expr1), targets = sub_expr5)
sub_expr8 = MultiQubitElem(element = Gate(operation = QPE(_U, _t), part = sub_expr1), targets = sub_expr5)
sub_expr9 = [ExprRange(sub_expr1, sub_expr7, one, _t), ExprRange(sub_expr1, sub_expr7, sub_expr3, sub_expr2)]
sub_expr10 = [ExprRange(sub_expr1, MultiQubitElem(element = Gate(operation = InverseFourierTransform(_t), part = sub_expr1), targets = sub_expr4), one, _t), ExprRange(sub_expr1, Gate(operation = I).with_implicit_representation(), one, _s)]
expr = Implies(QcircuitEquiv(Qcircuit(vert_expr_array = VertExprArray(sub_expr9, sub_expr10)), Qcircuit(vert_expr_array = VertExprArray([ExprRange(sub_expr1, sub_expr8, one, _t), ExprRange(sub_expr1, sub_expr8, sub_expr3, sub_expr2)]))), QcircuitEquiv(Qcircuit(vert_expr_array = VertExprArray([ExprRange(sub_expr1, Input(state = ket_plus), one, _t), ExprRange(sub_expr1, MultiQubitElem(element = Input(state = _ket_u, part = sub_expr1), targets = sub_expr6), one, _s)], sub_expr9, sub_expr10, [ExprRange(sub_expr1, MultiQubitElem(element = Output(state = _Psi_ket, part = sub_expr1), targets = sub_expr4), one, _t), ExprRange(sub_expr1, MultiQubitElem(element = Output(state = _ket_u, part = sub_expr1), targets = sub_expr6), one, _s)])), _Psi_circuit).with_wrapping_at(1)).with_wrapping_at(2)